rassling vs contact sport

rassling and contact sport both are nouns.

Word	Noun	Adjective	Verb	Adverb
rassling	Yes	No	No	No
contact sport	Yes	No	No	No

As nouns, contact sport is a hypernym of rassling; that is, contact sport is a word with a broader meaning than rassling:

rassling: the sport of hand-to-hand struggle between unarmed contestants who try to throw each other down
contact sport: a sport that necessarily involves body contact between opposing players

rassling (noun)	contact sport (noun)
the sport of hand-to-hand struggle between unarmed contestants who try to throw each other down	a sport that necessarily involves body contact between opposing players