winter squash vs squash

winter squash and squash both are nouns.

Word	Noun	Adjective	Verb	Adverb
winter squash	Yes	No	No	No
squash	Yes	No	Yes	No

As nouns, squash is a hypernym of winter squash; that is, squash is a word with a broader meaning than winter squash:

winter squash: any of various fruits of the gourd family with thick rinds and edible yellow to orange flesh that mature in the fall and can be stored for several months
squash: edible fruit of a squash plant; eaten as a vegetable

As nouns, squash is a hypernym of winter squash; that is, squash is a word with a broader meaning than winter squash:

winter squash: any of various plants of the species Cucurbita maxima and Cucurbita moschata producing squashes that have hard rinds and mature in the fall
squash: any of numerous annual trailing plants of the genus Cucurbita grown for their fleshy edible fruits

Other hypernyms of winter squash include squash vine.

winter squash (noun)	squash (noun)
any of various fruits of the gourd family with thick rinds and edible yellow to orange flesh that mature in the fall and can be stored for several months	a game played in an enclosed court by two or four players who strike the ball with long-handled rackets
any of various plants of the species Cucurbita maxima and Cucurbita moschata producing squashes that have hard rinds and mature in the fall	edible fruit of a squash plant; eaten as a vegetable
	any of numerous annual trailing plants of the genus Cucurbita grown for their fleshy edible fruits

winter squash (verb)	squash (verb)
	to compress with violence, out of natural shape or condition