stalked puffball vs fungus

stalked puffball and fungus both are nouns.

Word	Noun	Adjective	Verb	Adverb
stalked puffball	Yes	No	No	No
fungus	Yes	No	No	No

As nouns, fungus is a hypernym of stalked puffball; that is, fungus is a word with a broader meaning than stalked puffball:

stalked puffball: mushroom of the genus Tulostoma that resembles a puffball
fungus: an organism of the kingdom Fungi lacking chlorophyll and feeding on organic matter; ranging from unicellular or multicellular organisms to spore-bearing syncytia

stalked puffball (noun)	fungus (noun)
mushroom of the genus Tulostoma that resembles a puffball	an organism of the kingdom Fungi lacking chlorophyll and feeding on organic matter; ranging from unicellular or multicellular organisms to spore-bearing syncytia
a variety of Podaxaceae