stubble vs face fungus

stubble and face fungus both are nouns.

Word	Noun	Adjective	Verb	Adverb
stubble	Yes	No	No	No
face fungus	Yes	No	No	No

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

stubble: short stiff hairs growing on a man's face when he has not shaved for a few days
face fungus: the hair growing on the lower part of a man's face

Other hypernyms of stubble include beard, whiskers.

stubble (noun)	face fungus (noun)
short stiff hairs growing on a man's face when he has not shaved for a few days	the hair growing on the lower part of a man's face
material consisting of seed coverings and small pieces of stem or leaves that have been separated from the seeds