puffball vs true puffball

puffball and true puffball both are nouns.

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

As nouns, puffball and true puffball are synonyms defined as:

puffball and true puffball: any of various fungi of the family Lycoperdaceae whose round fruiting body discharges a cloud of spores when mature

puffball (noun)	true puffball (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 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