freshman vs fledgling

freshman and fledgling both are nouns.

Word	Noun	Adjective	Verb	Adverb
freshman	Yes	Yes	No	No
fledgling	Yes	Yes	No	No

As nouns, freshman and fledgling are synonyms defined as:

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

freshman (noun)	fledgling (noun)
a first-year undergraduate	young bird that has just fledged or become capable of flying
any new participant in some activity	any new participant in some activity

freshman (adjective)	fledgling (adjective)
used of a person in the first year of an experience (especially in United States high school or college)	(of a young bird) having acquired its flight feathers
	young and inexperienced