newbie vs entrant

newbie and entrant both are nouns.

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

As nouns, newbie and entrant are synonyms defined as:

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

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