dog bent vs Agrostis canina

dog bent and Agrostis canina both are nouns.

Word	Noun	Adjective	Verb	Adverb
dog bent	Yes	No	No	No
Agrostis canina	Yes	No	No	No

As nouns, dog bent and Agrostis canina are synonyms defined as:

dog bent and Agrostis canina: common grass with slender stems and narrow leaves

Other synonyms of dog bent include brown bent, Rhode Island bent, velvet bent, velvet bent grass.

dog bent (noun)	Agrostis canina (noun)
common grass with slender stems and narrow leaves	common grass with slender stems and narrow leaves