mud plantain vs water star grass

mud plantain and water star grass both are nouns.

Word	Noun	Adjective	Verb	Adverb
mud plantain	Yes	No	No	No
water star grass	Yes	No	No	No

As nouns, mud plantain and water star grass are synonyms defined as:

mud plantain and water star grass: grassy-leaved North American aquatic plant with yellow star-shaped blossoms

Other synonyms of mud plantain include Heteranthera dubia.

mud plantain (noun)	water star grass (noun)
grassy-leaved North American aquatic plant with yellow star-shaped blossoms	grassy-leaved North American aquatic plant with yellow star-shaped blossoms