Butternut squash and Zucchini

Butternut squash noun - Plant bearing buff-colored squash having somewhat bottle-shaped fruit with fine-textured edible flesh and a smooth thin rind.

Zucchini and butternut squash are semantically related. In some cases you can use "Zucchini" instead a noun phrase "Butternut squash".

Zucchini noun - Marrow squash plant whose fruit are eaten when small.

Butternut squash and zucchini are semantically related. You can use "Butternut squash" instead a noun "Zucchini".