imperativeness vs imperative

imperativeness and imperative both are nouns.

Word	Noun	Adjective	Verb	Adverb
imperativeness	Yes	No	No	No
imperative	Yes	Yes	No	No

imperativeness (noun)	imperative (noun)
the quality of being insistent	some duty that is essential and urgent
the state of demanding notice or attention	a verb in the imperative mood.
	a mood that expresses an intention to influence the listener's behavior

imperativeness (adjective)	imperative (adjective)
	requiring attention or action
	relating to verbs in the imperative mood