Squash vine and Winter squash

Squash vine noun - Any of numerous annual trailing plants of the genus Cucurbita grown for their fleshy edible fruits.

Winter squash and squash vine are semantically related. In some cases you can replace phrase "Winter squash" with "Squash vine", this phrases are similar.

Winter squash noun - Any of various plants of the species Cucurbita maxima and Cucurbita moschata producing squashes that have hard rinds and mature in the fall.

Squash vine and winter squash are semantically related. You can use "Squash vine" instead a noun phrase "Winter squash".