sports stadium vs park

sports stadium and park both are nouns.

Word	Noun	Adjective	Verb	Adverb
sports stadium	Yes	No	No	No
park	Yes	No	Yes	No

As nouns, park is a hyponym of sports stadium; that is, park is a word with a more specific, narrower meaning than sports stadium:

sports stadium (noun)	park (noun)
a large structure for open-air sports or entertainments	a facility in which ball games are played (especially baseball games)
	a gear position that acts as a parking brake
	a large area of land preserved in its natural state as public property
	a piece of open land for recreational use in an urban area
	a lot where cars are parked

sports stadium (verb)	park (verb)
	place temporarily
	maneuver a vehicle into a parking space