| action(noun, activity, act, account, answer) |
| response(noun, post, mail, email) |
| reply(noun, activity, action, account, answer) |
| activity(noun, action, act, account, answer) |
| answer(noun, activity, action, account, reply) |
| account(noun, activity, action, answer, post) |
| customer service(noun, expression, system, facility, utility) |
| email(noun, effect, post, response, reaction) |
| mail(noun, effect, post, response, reaction) |
| post(noun, effect, response, reaction, mail) |
| attitude(noun, action, act, dealing) |
| comment(noun, post, mail, email) |
| explanation(noun, action, act, dealing) |
| information(noun, action, act, dealing) |
| message(noun, post, mail, email) |
| opinion(noun, post, mail, email) |
| process(noun, action, act, dealing) |
| reciprocation(noun, action, act, dealing) |
| reflection(noun, action, act, dealing) |
| report(noun, post, mail, email) |