ice hockey vs contact sport

ice hockey and contact sport both are nouns.

Word	Noun	Adjective	Verb	Adverb
ice hockey	Yes	No	No	No
contact sport	Yes	No	No	No

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

ice hockey: a game played on an ice rink by two opposing teams of six skaters each who try to knock a flat round puck into the opponents' goal with angled hockey sticks
contact sport: a sport that necessarily involves body contact between opposing players

Other hypernyms of ice hockey include athletic game.

ice hockey (noun)	contact sport (noun)
a game played on an ice rink by two opposing teams of six skaters each who try to knock a flat round puck into the opponents' goal with angled hockey sticks	a sport that necessarily involves body contact between opposing players