camphor ball vs mothball

camphor ball and mothball both are nouns.

Word	Noun	Adjective	Verb	Adverb
camphor ball	Yes	No	No	No
mothball	Yes	No	Yes	No

As nouns, camphor ball and mothball are synonyms defined as:

camphor ball and mothball: a small sphere of camphor or naphthalene used to keep moths away from stored clothing

camphor ball (noun)	mothball (noun)
a small sphere of camphor or naphthalene used to keep moths away from stored clothing	a small sphere of camphor or naphthalene used to keep moths away from stored clothing

camphor ball (verb)	mothball (verb)
	put into long-term storage