tussock vs wisp

tussock and wisp both are nouns.

Word	Noun	Adjective	Verb	Adverb
tussock	Yes	No	No	No
wisp	Yes	No	No	No

As nouns, wisp is a hyponym of tussock; that is, wisp is a word with a more specific, narrower meaning than tussock:

Other hyponyms of tussock include hexenbesen, staghead, witch broom, witches' broom, coma.

tussock (noun)	wisp (noun)
a bunch of hair or feathers or growing grass	a flock of snipe
	a small tuft or lock
	a small bundle of straw or hay
	a small person