Pumpkin and Scallop squash

Pumpkin noun - A coarse vine widely cultivated for its large pulpy round orange fruit with firm orange skin and numerous seeds; subspecies of Cucurbita pepo include the summer squashes and a few autumn squashes.

Scallop squash and pumpkin are semantically related. In some cases you can use "Scallop squash" instead a noun "Pumpkin".

Pumpkin and scallop squash are semantically related. You can use "Pumpkin" instead a noun phrase "Scallop squash".