Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
obligatory | No | Yes | No | No |
necessary | Yes | Yes | No | No |
obligatory (noun) | necessary (noun) |
---|---|
anything indispensable |
obligatory (adjective) | necessary (adjective) |
---|---|
morally or legally constraining or binding | absolutely essential |
required by obligation or compulsion or convention | unavoidably determined by prior circumstances |