past progressive vs past progressive tense

past progressive and past progressive tense both are nouns.

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

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

past progressive and past progressive tense: a progressive tense used to describe on-going action in the past

past progressive (noun)	past progressive tense (noun)
a progressive tense used to describe on-going action in the past	a progressive tense used to describe on-going action in the past