Squash vine and Summer squash

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

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

Summer squash noun - Any of various usually bushy plants producing fruit that is eaten while immature and before the rind or seeds harden.

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