stunt kite vs sport kite

stunt kite and sport kite both are nouns.

Word	Noun	Adjective	Verb	Adverb
stunt kite	Yes	No	No	No
sport kite	Yes	No	No	No

As nouns, stunt kite and sport kite are synonyms defined as:

stunt kite and sport kite: a maneuverable kite controlled by two lines and flown with both hands

stunt kite (noun)	sport kite (noun)
a maneuverable kite controlled by two lines and flown with both hands	a maneuverable kite controlled by two lines and flown with both hands