bunch vs tussock

bunch and tussock both are nouns.

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

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

Other hyponyms of bunch include knot, swad, tuft.

bunch (noun)	tussock (noun)
a grouping of a number of similar things	a bunch of hair or feathers or growing grass
an informal body of friends
any collection in its entirety

bunch (verb)	tussock (verb)
gather or cause to gather into a cluster
form into a bunch