imperfect vs progressive tense

imperfect and progressive tense both are nouns.

Word	Noun	Adjective	Verb	Adverb
imperfect	Yes	Yes	No	No
progressive tense	Yes	No	No	No

As nouns, imperfect and progressive tense are synonyms defined as:

imperfect and progressive tense: a tense of verbs used in describing action that is on-going

Other synonyms of imperfect include continuous tense, imperfect tense, progressive.

imperfect (noun)	progressive tense (noun)
a tense of verbs used in describing action that is on-going	a tense of verbs used in describing action that is on-going

imperfect (adjective)	progressive tense (adjective)
not perfect; defective or inadequate
wanting in moral strength, courage, or will; having the attributes of man as opposed to e.g. divine beings