awlwort vs water plant

awlwort and water plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
awlwort	Yes	No	No	No
water plant	Yes	No	No	No

As nouns, water plant is a hypernym of awlwort; that is, water plant is a word with a broader meaning than awlwort:

awlwort: small aquatic plant having tufted awl-shaped leaves in a basal rosette and minute white flowers; circumboreal
water plant: a plant that grows partly or wholly in water whether rooted in the mud, as a lotus, or floating without anchorage, as the water hyacinth

Other hypernyms of awlwort include aquatic plant, hydrophyte, hydrophytic plant.

awlwort (noun)	water plant (noun)
small aquatic plant having tufted awl-shaped leaves in a basal rosette and minute white flowers; circumboreal	a plant that grows partly or wholly in water whether rooted in the mud, as a lotus, or floating without anchorage, as the water hyacinth