past progressive tense vs past progressive

past progressive tense and past progressive both are nouns.

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

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

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

past progressive tense (noun)	past progressive (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