bent vs bent grass

bent and bent grass both are nouns.

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

As nouns, bent and bent grass are synonyms defined as:

bent and bent grass: grass for pastures and lawns especially bowling and putting greens

Other synonyms of bent include bent-grass.

bent (noun)	bent grass (noun)
a special way of doing something	grass for pastures and lawns especially bowling and putting greens
a relatively permanent inclination to react in a particular way
an area of grassland unbounded by fences or hedges
grass for pastures and lawns especially bowling and putting greens

bent (adjective)	bent grass (adjective)
of metal e.g.
fixed in your purpose
used of the back and knees; stooped