stinging hair vs fuzz

stinging hair and fuzz both are nouns.

Word	Noun	Adjective	Verb	Adverb
stinging hair	Yes	No	No	No
fuzz	Yes	No	No	No

As nouns, fuzz is a hypernym of stinging hair; that is, fuzz is a word with a broader meaning than stinging hair:

stinging hair: a multicellular hair in plants like the stinging nettle that expels an irritating fluid
fuzz: filamentous hairlike growth on a plant

Other hypernyms of stinging hair include hair, tomentum.

stinging hair (noun)	fuzz (noun)
a multicellular hair in plants like the stinging nettle that expels an irritating fluid	the first beard of an adolescent boy
	a hazy or indistinct representation
	uncomplimentary terms for a policeman
	filamentous hairlike growth on a plant