honey fungus vs honey mushroom

honey fungus and honey mushroom both are nouns.

Word	Noun	Adjective	Verb	Adverb
honey fungus	Yes	No	No	No
honey mushroom	Yes	No	No	No

As nouns, honey fungus and honey mushroom are synonyms defined as:

honey fungus and honey mushroom: a honey-colored edible mushroom commonly associated with the roots of trees in late summer and fall; do not eat raw

Other synonyms of honey fungus include Armillariella mellea.

honey fungus (noun)	honey mushroom (noun)
a honey-colored edible mushroom commonly associated with the roots of trees in late summer and fall; do not eat raw	a honey-colored edible mushroom commonly associated with the roots of trees in late summer and fall; do not eat raw