stubble vs whiskers

stubble and whiskers both are nouns.

Word	Noun	Adjective	Verb	Adverb
stubble	Yes	No	No	No
whiskers	Yes	No	No	No

As nouns, whiskers is a hypernym of stubble; that is, whiskers 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
whiskers: the hair growing on the lower part of a man's face

Other hypernyms of stubble include beard, face fungus.

stubble (noun)	whiskers (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