Is hulls a common noun

Answer 1

Yes, the plural noun hulls is a common noun, a word for any hull or hulls. The word hulls is also a verb (hull, hulls, hulling, hulled). Example uses:

Noun: The hulls are removed before the grain is ground.

Verb: This is the machines that hulls the grain.

Answer 2

Yes, "hulls" is a common noun. It refers to the outer covering or shell of a seed, fruit, or nut.