puffball vs earthball

puffball and earthball both are nouns.

Word	Noun	Adjective	Verb	Adverb
puffball	Yes	No	No	No
earthball	Yes	No	No	No

As nouns, puffball and earthball are synonyms defined as:

puffball and earthball: any of various fungi of the genus Scleroderma having hard-skinned subterranean fruiting bodies resembling truffles

Other synonyms of puffball include false truffle, hard-skinned puffball.

puffball (noun)	earthball (noun)
any of various fungi of the family Lycoperdaceae whose round fruiting body discharges a cloud of spores when mature	any of various fungi of the genus Scleroderma having hard-skinned subterranean fruiting bodies resembling truffles
any of various fungi of the genus Scleroderma having hard-skinned subterranean fruiting bodies resembling truffles