geminate vs repeat

geminate and repeat both are nouns.

Word	Noun	Adjective	Verb	Adverb
geminate	Yes	No	Yes	No
repeat	Yes	No	Yes	No

As verbs, repeat is a hypernym of geminate; that is, repeat is a word with a broader meaning than geminate:

Other hypernyms of geminate include double, duplicate, reduplicate, replicate.

geminate (noun)	repeat (noun)
a doubled or long consonant	an event that repeats

geminate (verb)	repeat (verb)
arrange or combine in pairs	happen or occur again
arrange in pairs	to say, state, or perform again
occur in pairs	to say again or imitate
form by reduplication	make or do or perform again
	repeat an earlier theme of a composition
	do over