comeback vs reappearance

comeback and reappearance both are nouns.

Word	Noun	Adjective	Verb	Adverb
comeback	Yes	No	No	No
reappearance	Yes	No	No	No

As nouns, reappearance is a hypernym of comeback; that is, reappearance is a word with a broader meaning than comeback:

Other hypernyms of comeback include return.

comeback (noun)	reappearance (noun)
return by a celebrity to some previously successful activity	the act of someone appearing again
a quick reply to a question or remark (especially a witty or critical one)	the event of something appearing again