Pumpkin is a gourd-like squash of the genus Cucurbita and the family Cucurbitaceae (which also includes gourds). It is a common name of or can refer to cultivars of any one of the following species: Cucurbita pepo, Cucurbita mixta, Cucurbita maxima, and Cucurbita moschata.
Cucurbita is a genus in the gourd family Cucurbitaceae first cultivated in the Americas and now used in many parts of the world. It includes species grown for their fruit and edible seeds (the squashes, pumpkins and marrows, and the chilacayote), as well as some species grown only as gourds