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 birdhouse gourd is the white-flowering gourd species that produce the hard-shelled fruit mainly used for crafts. The yellow-flowering gourds (Cucurbit spp. ) are the thin-skinned and used as colorful decorations. You can purchase birdhouse gourd seeds from local nurseries or seed catalogs.