grass vetchling vs Lathyrus nissolia

grass vetchling and Lathyrus nissolia both are nouns.

Word	Noun	Adjective	Verb	Adverb
grass vetchling	Yes	No	No	No
Lathyrus nissolia	Yes	No	No	No

As nouns, grass vetchling and Lathyrus nissolia are synonyms defined as:

grass vetchling and Lathyrus nissolia: annual European vetch with red flowers

Other synonyms of grass vetchling include grass vetch.

grass vetchling (noun)	Lathyrus nissolia (noun)
annual European vetch with red flowers	annual European vetch with red flowers