สะดวกสบาย, ความสะดวกสบาย, ไม่สะดวก, ความไม่สะดวก

Convenient (adjective) สะดวกสบาย

Convenience (noun) ความสะดวกสบาย

Inconvenient (adjective) ไม่สะดวก

Inconvenience (noun) ความไม่สะดวก

Adjectives: convenient and inconvenient

NOTE: People can’t be convenient or inconvenient

E.g. Are you convenient on Tuesday? = WRONG

I am inconvenient at Siam. = WRONG

Days and places can be convenient and inconvenient.

E.g. Is Tuesday convenient for you? = CORRECT

Siam isn’t convenient for me. / Siam is inconvenient for me. = CORRECT

Nouns: Convenience and inconvenience

Usually the noun is used with the negative form (inconvenience) as a way to apologise for an inconvenient situation.

The nouns are uncountable so you shouldn't say inconveniences. You should usually use the words ‘the’ or ‘any’ when talking about inconvenience.

E.g. “We would like to sincerely apologise for the inconvenience caused”

“I am sorry for any inconvenience this may have caused.”

“We would like to apologise for any inconvenience caused.”

The positive form is rarely used. It is usually used to give a reason to why you live/work/go somewhere.

E.g. A: Why do/did you go to the office in Siam and not in Sukhumwit?

B: Because of the convenience of the location. It’s very close to my house.