"Squash" vs. "pumpkin": a harvest of words

What is similar?

Both squash and pumpkin are types of plants belonging to the Cucurbitaceae family. They are often used as food and can be found in similar growing conditions. Both are typically harvested in the fall and have a hard outer shell with seeds inside.

What is different?

Squash can refer to a variety of different species and types, including both summer and winter squash, while a pumpkin is usually understood to be a specific cultivar of winter squash with a distinct round shape and orange color. The term "pumpkin" is more narrowly defined compared to "squash".

Which one is more common?