past tense vs preterite

past tense and preterite both are nouns.

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

As nouns, preterite is a hyponym of past tense; that is, preterite is a word with a more specific, narrower meaning than past tense:

Other hyponyms of past tense include preterit, past simple, simple past.

past tense (noun)	preterite (noun)
a verb tense that expresses actions or states in the past	a term formerly used to refer to the simple past tense