finger grass vs grass

finger grass and grass both are nouns.

Word	Noun	Adjective	Verb	Adverb
finger grass	Yes	No	No	No
grass	Yes	No	Yes	No

As nouns, grass is a hypernym of finger grass; that is, grass is a word with a broader meaning than finger grass:

finger grass: any grass of the genus Chloris; occurs in short grassland especially on waste ground or poor soils
grass: narrow-leaved green herbage: grown as lawns; used as pasture for grazing animals; cut and dried as hay

As nouns, grass is a hypernym of finger grass; that is, grass is a word with a broader meaning than finger grass:

finger grass: grasses with creeping stems that root freely; a pest in lawns
grass: narrow-leaved green herbage: grown as lawns; used as pasture for grazing animals; cut and dried as hay

finger grass (noun)	grass (noun)
any grass of the genus Chloris; occurs in short grassland especially on waste ground or poor soils	street names for marijuana
grasses with creeping stems that root freely; a pest in lawns	bulky food like grass or hay for browsing or grazing horses or cattle
	a police informer who implicates many people
	narrow-leaved green herbage: grown as lawns; used as pasture for grazing animals; cut and dried as hay

finger grass (verb)	grass (verb)
	give away information about somebody
	shoot down, of birds
	feed with grass
	cover with grass
	spread out clothes on the grass to let it dry and bleach