The most common use of a firework is as part of a fireworks display (also called a fireworks show or pyrotechnics), a display of the effects produced by firework devices. Fireworks competitions are also regularly held at a number of places.
A gourd is a plant of the family Cucurbitaceae, particularly Cucurbita and Lagenaria or the fruit of the two genera of Bignoniaceae calabash tree, Crescentia and Amphitecna. The term refers to a number of species and subspecies, many with hard shells, and some without.
The butternut squash and the gourd are both plants within the Cucurbitaceae family, but the butternut squash is a specific plant while the gourd is a general name given to plants within the Cucurbitaceae family. The origins of the butternut squash and its uses are different from other gourds.