re-emerge vs appear

re-emerge and appear both are verbs.

Word	Noun	Adjective	Verb	Adverb
re-emerge	No	No	Yes	No
appear	No	No	Yes	No

As verbs, appear is a hypernym of re-emerge; that is, appear is a word with a broader meaning than re-emerge:

re-emerge (verb)	appear (verb)
appear again	come into sight or view
	be issued or published
	come into being or existence, or appear on the scene
	appear as a character on stage or appear in a play, etc.
	give a certain impression of being something or having a certain aspect
	(of a proposition) seem to be true, probable, or apparent
	present oneself formally, as before a (judicial) authority