As a child in the 80s UK - a gourd was the commonly used word for all squashes - and gourds were pretty rare to find in a shop. If you saw a gourd it was often an ornamental dried gourd that someone would have as a gift from the states. 'Squash' was a real Americanism, and wasn't wildly used in the people I knew until the late 90s. I remember my bother working as a farm hand an bring some squashes home with hi to eat, and him having to explain them as gourdes to family/neighbours who were interested in how 'ugly' they looked.

Pumpkins were always the orange, large and round ones - and back in the 80s we still carved turnips or swedes in the North of England, as pumpkins were too expensive.