located_on_terrain_feature ko kham
Ko Mak is a small island of Trat Province , ___MASK37___ . The island is named after the Areca nut (  ). Bangkok is the capital and most populous city of ___MASK37___ . It is known in Thai as " Krung Thep Maha Nakhon " ( pronounced ) or simply . The city occupies in the Chao Phraya River delta in Central ___MASK37___ , and has a population of over 8 million , or 12 . 6 percent of the country ' s population . Over 14 million people ( 22 . 2 percent ) live within the surrounding Bangkok Metropolitan Region , making Bangkok an extreme primate city , significantly dwarfing ___MASK37___ ' s other urban centres in terms of importance . There are 581 high - rise buildings in the city , ranking number 5 in the world . The areca nut ( or ) is the seed of the areca palm (" Areca catechu "), which grows in much of the tropical Pacific ( Melanesia and Micronesia ), Southeast and South ___MASK28___ , and parts of east Africa . This seed is commonly referred to as betel nut so it is easily confused with betel leaves that are often used to wrap it ( paan ). The term areca originated from a South Asian word during the 16th century , when Dutch and Portuguese sailors took the nut to Europe . Consumption has many harmful effects on health and is carcinogenic to humans . Various compounds present in the nut , most importantly arecoline ( the primary psychoactive ingredient which is similar to nicotine ), contribute to histologic changes in the oral mucosa . As with chewing tobacco , its use is discouraged by preventive efforts . An archipelago , sometimes called an island group or island chain , is a chain , cluster or collection of islands . The word " archipelago " is derived from the Greek "  -  arkhi -" (" chief ") and "   pélagos " (" sea ") through the Italian " arcipelago ". In Italian , possibly following a tradition of antiquity , the Archipelago ( from medieval Greek "*  " and Latin " archipelagus ") was the proper name for the ___MASK63___ and , later , usage shifted to refer to the Aegean Islands ( since the sea is remarkable for its large number of islands ). It is now used to refer to any island group or , sometimes , to a sea containing a small number of scattered islands . Chanthaburi ( Chong :      , " chankabui ", lit : " Lady Chan , Who wear a pan on her head ") is a province (" changwat ") of ___MASK37___ . It is in the east of ___MASK37___ , on the border with Battambang and Pailin of ___MASK31___ and on the shore of the ___MASK36___ . Neighbouring provinces are Trat in the east and Rayong , Chonburi , Chachoengsao , and Sa Kaeo to the west and north . Ko Kham ( Thai :  ) is a small island near Ko Mak , on Trat Province , ___MASK37___ . It can be reached with a sea kayak from Ko Mak or by walking during low tide . Ko Kham has nice places to snorkel , depending on the direction of wind . Especially the south beach has a calm sea , nice sand dune , black lava rocks with shells and crabs ( or crayfish or shellfish ) . Near rocks , you may see ( or swim over ) black sea urchins that have 15 - 30 cm radius and many thin black spines about 30 - 50 cm long . Locals say that the spines contain small needles and poison : if one touches the spines and gets the needles , the needle should be crushed with a rock . The poison is only irritating and not lethal . In Thai , the name is hoi men (    ) . ___MASK76___ or Southeastern Asia is a subregion of Asia , consisting of the countries that are geographically south of ___MASK55___ , east of India , west of New Guinea and north of Australia . The region lies near the intersection of geological plates , with heavy seismic and volcanic activity . ___MASK76___ consists of two geographic regions : Trat is the easternmost province (" changwat ") along the Thai ___MASK15___ . It has borders with Chanthaburi Province to the northwest , Cambodia to the east , and the ___MASK36___ to the south . Trat is 315 km from Bangkok . ___MASK31___ ( or Kampuchea ), officially known as the Kingdom of ___MASK31___ ( Preh Réachéanachâk Kâmpchéa ), is a country located in the southern portion of the Indochina Peninsula in ___MASK76___ . It is in area , bordered by Thailand to the northwest , Laos to the northeast , Vietnam to the east , and the ___MASK36___ to the southwest . Water is a transparent and nearly colorless chemical substance that is the main constituent of ___MASK86___ ' s streams , lakes , and oceans , and the fluids of most living organisms . Its chemical formula is HO , meaning that its molecule contains one oxygen and two hydrogen atoms , that are connected by covalent bonds . Water strictly refers to the liquid state of that substance , that prevails at standard ambient temperature and pressure ; but it often refers also to its solid state ( ice ) or its gaseous state ( steam or water vapor ). It also occurs in nature as snow , glaciers , ice packs and icebergs , clouds , fog , dew , aquifers , and atmospheric humidity . A cay ( or ), also spelled caye or key , is a small , low - elevation , sandy island on the surface of a coral reef . Cays occur in tropical environments throughout the Pacific , Atlantic and Indian Oceans ( including in the ___MASK68___ and on the Great Barrier Reef and Belize Barrier Reef ). A continent is one of several very large landmasses on ___MASK86___ . Generally identified by convention rather than any strict criteria , up to seven regions are commonly regarded as continents . Ordered from largest in size to smallest , they are : ___MASK28___ , Africa , North America , ___MASK27___ , Antarctica , Europe , and Australia . In geology , areas of continental crust include regions covered with water . An island or isle is any piece of sub - continental land that is surrounded by water . Very small islands such as emergent land features on atolls can be called islets , skerries , cays or keys . An island in a river or a lake island may be called an eyot or ait , and a small island off the ___MASK15___ may be called a holm . A grouping of geographically or geologically related islands is called an archipelago , e . g . the Philippines . The ___MASK36___ , formerly the Gulf of Siam , is a shallow inlet in the western part of the South China and Eastern Archipelagic Seas , a marginal body of water in the western Pacific Ocean . The gulf is around 800 km ( 497 mi ) long and up to 560 km ( 348 mi ) wide , has a surface area of 320 , 000 km ( 123 , 553 sq mi ) and is surrounded on the north , west and southwest by Thailand , on the northeast by Cambodia and Vietnam . The South China Sea is to the southeast . The Philippines , officially the Republic of the Philippines , is a sovereign island country in ___MASK76___ situated in the western Pacific Ocean . It consists of about 7 , 641 islands that are categorized broadly under three main geographical divisions from north to south : Luzon , Visayas , and Mindanao . The capital city of the Philippines is Manila and the most populous city is Quezon City , both part of Metro Manila . Bounded by the South ___MASK55___ Sea on the west , the Philippine Sea on the east and the Celebes Sea on the southwest , the Philippines shares maritime borders with Taiwan to the north , Vietnam to the west , Palau to the east and Malaysia and Indonesia to the south . Lake Island is an island on the ___MASK15___ of the Canadian province of British Columbia . It is located between Mathieson Channel and Lady Trutch Passage , and is flanked by Dowager Island ( to the northwest ), Lady Douglas Island ( to the west ), and a long finger shaped peninsula of the Canadian mainland to the east . Ironically , Lake Island is not a lake island , as it is in an inlet of the Pacific Ocean , and lies only some 6 kilometres from the open sea . ___MASK37___ ( or ), officially the Kingdom of ___MASK37___ , formerly known as Siam , is a country at the centre of the Indochinese peninsula in ___MASK76___ . With a total area of approximately , ___MASK37___ is the world ' s 51st - largest country . It is the 20th - most - populous country in the world , with around 66 million people . The capital and largest city is Bangkok .