perfective vs perfective tense

perfective and perfective tense both are nouns.

Word	Noun	Adjective	Verb	Adverb
perfective	Yes	No	No	No
perfective tense	Yes	No	No	No

As nouns, perfective and perfective tense are synonyms defined as:

perfective and perfective tense: a tense of verbs used in describing action that has been completed (sometimes regarded as perfective aspect)

Other synonyms of perfective include perfect, perfect tense.

perfective (noun)	perfective tense (noun)
the aspect of a verb that expresses a completed action	a tense of verbs used in describing action that has been completed (sometimes regarded as perfective aspect)
a tense of verbs used in describing action that has been completed (sometimes regarded as perfective aspect)