past progressive vs progressive

past progressive and progressive both are nouns.

Word	Noun	Adjective	Verb	Adverb
past progressive	Yes	No	No	No
progressive	Yes	Yes	No	No

As nouns, progressive is a hypernym of past progressive; that is, progressive is a word with a broader meaning than past progressive:

past progressive: a progressive tense used to describe on-going action in the past
progressive: a tense of verbs used in describing action that is on-going

Other hypernyms of past progressive include continuous tense, imperfect, imperfect tense, progressive tense.

past progressive (noun)	progressive (noun)
a progressive tense used to describe on-going action in the past	a person who favors a political philosophy of progress and reform and the protection of civil liberties
	a tense of verbs used in describing action that is on-going

past progressive (adjective)	progressive (adjective)
	favoring or promoting progress
	(of taxes) adjusted so that the rate increases as the amount of income increases
	advancing in severity
	gradually advancing in extent
	favoring or promoting reform (often by government action)
	(of a card game or a dance) involving a series of sections for which the participants successively change place or relative position