future perfect vs future perfect tense

future perfect and future perfect tense both are nouns.

Word	Noun	Adjective	Verb	Adverb
future perfect	Yes	No	No	No
future perfect tense	Yes	No	No	No

As nouns, future perfect and future perfect tense are synonyms defined as:

future perfect and future perfect tense: a perfective tense used to describe action that will be completed in the future

future perfect (noun)	future perfect tense (noun)
a perfective tense used to describe action that will be completed in the future	a perfective tense used to describe action that will be completed in the future