SELECT DISTINCT characteristic_name FROM CHARACTERISTICS
SELECT DISTINCT characteristic_name FROM CHARACTERISTICS <table_name> : Characteristics col : characteristic_id | characteristic_type_code | characteristic_data_type | characteristic_name | other_characteristic_details row 1 : 1 | Grade | numquam | slow |  row 2 : 2 | Grade | doloribus | fast |  row 3 : 3 | Purity | rem | warm |  row 4 : 4 | Grade | aut | hot |  row 5 : 5 | Purity | impedit | hot |  row 6 : 6 | Purity | qui | warm |  row 7 : 7 | Grade | et | cool |  row 8 : 8 | Grade | dolores | cool |  row 9 : 9 | Grade | quam | cool |  row 10 : 10 | Grade | velit | fast |  row 11 : 11 | Purity | at | fast |  row 12 : 12 | Grade | totam | error |  row 13 : 13 | Purity | mollitia | slow |  row 14 : 14 | Purity | placeat | slow |  row 15 : 15 | Grade | facere | slow |
col : characteristic_name row 1 : slow row 2 : fast row 3 : warm row 4 : hot row 5 : cool row 6 : error