repay vs rejoin

repay and rejoin both are verbs.

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

As verbs, repay and rejoin are synonyms defined as:

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

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