Gastrocybe lateritia vs fungus

Gastrocybe lateritia and fungus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gastrocybe lateritia	Yes	No	No	No
fungus	Yes	No	No	No

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

Gastrocybe lateritia: a species of Gastrocybe fungus that has a conic cap and a thin stalk; at first the stalk is upright but as it matures the stalk bends over and then downward; the cap then gelatinizes and a slimy mass containing the spores falls to the ground as the stalk collapses
fungus: an organism of the kingdom Fungi lacking chlorophyll and feeding on organic matter; ranging from unicellular or multicellular organisms to spore-bearing syncytia

Gastrocybe lateritia (noun)	fungus (noun)
a species of Gastrocybe fungus that has a conic cap and a thin stalk; at first the stalk is upright but as it matures the stalk bends over and then downward; the cap then gelatinizes and a slimy mass containing the spores falls to the ground as the stalk collapses	an organism of the kingdom Fungi lacking chlorophyll and feeding on organic matter; ranging from unicellular or multicellular organisms to spore-bearing syncytia