rejoin vs repay

rejoin and repay both are verbs.

Word	Noun	Adjective	Verb	Adverb
rejoin	No	No	Yes	No
repay	No	No	Yes	No

As verbs, rejoin and repay are synonyms defined as:

Other synonyms of rejoin include come back, retort, return, riposte.

rejoin (verb)	repay (verb)
answer back	answer back
join again	pay back
	make repayment for or return something
	act or give recompense in recognition of someone's behavior or actions