progressive tense vs imperfect tense

progressive tense and imperfect tense both are nouns.

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

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

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

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

progressive tense (noun)	imperfect 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