grass vetchling vs grass vetch

grass vetchling and grass vetch both are nouns.

Word	Noun	Adjective	Verb	Adverb
grass vetchling	Yes	No	No	No
grass vetch	Yes	No	No	No

As nouns, grass vetchling and grass vetch are synonyms defined as:

Other synonyms of grass vetchling include Lathyrus nissolia.

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