newbie vs neophyte

newbie and neophyte both are nouns.

Word	Noun	Adjective	Verb	Adverb
newbie	Yes	No	No	No
neophyte	Yes	No	No	No

As nouns, newbie and neophyte are synonyms defined as:

Other synonyms of newbie include entrant, fledgeling, fledgling, freshman, newcomer, starter.

newbie (noun)	neophyte (noun)
any new participant in some activity	any new participant in some activity
	a new convert being taught the principles of Christianity by a catechist
	a plant that is found in an area where it had not been recorded previously