ripple-grass vs ribwort

ripple-grass and ribwort both are nouns.

Word	Noun	Adjective	Verb	Adverb
ripple-grass	Yes	No	No	No
ribwort	Yes	No	No	No

As nouns, ripple-grass and ribwort are synonyms defined as:

ripple-grass and ribwort: an Old World plantain with long narrow ribbed leaves widely established in temperate regions

Other synonyms of ripple-grass include buckthorn, English plantain, narrow-leaved plantain, Plantago lanceolata, ribgrass.

ripple-grass (noun)	ribwort (noun)
an Old World plantain with long narrow ribbed leaves widely established in temperate regions	an Old World plantain with long narrow ribbed leaves widely established in temperate regions