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##### SUMMARY
<!--- Explain the problem briefly below -->
Ansible currently contains two modules for managing AWS EC2 instances: [`ec2`](https://docs.ansible.com/ansible/latest/modules/ec2_module.html) and [`ec2_instance`](https://docs.ansible.com/ansible/latest/modules/ec2_instance_module.html).

There is considerable overlap between the modules, but it's unclear what the differences are and why there are two modules in the first place.

##### ISSUE TYPE
- Documentation Report

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->
ec2
ec2_instance

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below
ansible 2.10.0.dev0
  config file = /home/user/.ansible.cfg
  configured module search path = ['/home/user/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/user/ansible/lib/ansible
  executable location = /home/user/ansible/bin/ansible
  python version = 3.7.5 (default, Oct 27 2019, 15:43:29) [GCC 9.2.1 20191022]
```

##### CONFIGURATION
<!--- Paste verbatim output from "ansible-config dump --only-changed" between quotes -->
```paste below
RETRY_FILES_ENABLED(/home/user/.ansible.cfg) = False
```

##### OS / ENVIRONMENT
<!--- Provide all relevant information below, e.g. target OS versions, network device firmware, etc. -->
Debian bullseye/sid

##### STEPS TO REPRODUCE
<!--- Describe exactly how to reproduce the problem, using a minimal test-case -->

<!--- Paste example playbooks or commands between quotes below -->
```yaml
N/A
```

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##### EXPECTED RESULTS
<!--- Describe what you expected to happen when running the steps above -->
N/A

##### ACTUAL RESULTS
<!--- Describe what actually happened. If possible run with extra verbosity (-vvvv) -->

<!--- Paste verbatim command output between quotes -->
```paste below
N/A
```

if module.params.get('id'):
        filters['client-token'] = module.params['id']
    
    
    for res in ec2.get_all_instances(instance_ids, filters=filters):
        for inst in res.instances:
            warn_if_public_ip_assignment_changed(module, inst)
            changed = (check_source_dest_attr(module, inst, ec2) or
                       check_termination_protection(module, inst) or changed)
            
            if inst.state != state:
                instance_dict_array.append(get_instance_info(inst))
                try:
                    inst.reboot()
                except EC2ResponseError as e:
                    module.fail_json(msg='Unable to change state for instance {0}, error: {1}'.format(inst.id, e))
                changed = True
    return (changed, instance_dict_array, instance_ids)
def check_termination_protection(module, inst):
    """
    Check the instance disableApiTermination attribute.
    module: Ansible module object
    inst: EC2 instance object
    returns: True if state changed None otherwise
    """
    termination_protection = module.params.get('termination_protection')
    if (inst.get_attribute('disableApiTermination')['disableApiTermination'] != termination_protection and termination_protection is not None):
        inst.modify_attribute('disableApiTermination', termination_protection)
        return True
def check_source_dest_attr(module, inst, ec2):