apostate vs deserter

apostate and deserter both are nouns.

Word	Noun	Adjective	Verb	Adverb
apostate	Yes	Yes	No	No
deserter	Yes	No	No	No

As nouns, apostate and deserter are synonyms defined as:

apostate and deserter: a disloyal person who betrays or deserts his cause or religion or political party or friend etc.

Other synonyms of apostate include ratter, recreant, renegade, turncoat.

apostate (noun)	deserter (noun)
a disloyal person who betrays or deserts his cause or religion or political party or friend etc.	a person who abandons their duty (as on a military post)
	a disloyal person who betrays or deserts his cause or religion or political party or friend etc.

apostate (adjective)	deserter (adjective)
not faithful to religion or party or cause