newcomer vs entrant

newcomer and entrant both are nouns.

Word	Noun	Adjective	Verb	Adverb
newcomer	Yes	No	No	No
entrant	Yes	No	No	No

As nouns, newcomer and entrant are synonyms defined as:

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

newcomer (noun)	entrant (noun)
any new participant in some activity	a commodity that enters competition with established merchandise
a recent arrival	one who enters a competition
	any new participant in some activity
	someone who enters