imperative verb vs imperative

imperative verb and imperative both are nouns.

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

As nouns, imperative verb and imperative are synonyms defined as:

imperative verb (noun)	imperative (noun)
a verb in the imperative mood.	some duty that is essential and urgent
	a verb in the imperative mood.
	a mood that expresses an intention to influence the listener's behavior

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