hedge bindweed vs Calystegia sepium

hedge bindweed and Calystegia sepium both are nouns.

Word	Noun	Adjective	Verb	Adverb
hedge bindweed	Yes	No	No	No
Calystegia sepium	Yes	No	No	No

As nouns, hedge bindweed and Calystegia sepium are synonyms defined as:

hedge bindweed and Calystegia sepium: common Eurasian and American wild climber with pink flowers; sometimes placed in genus Convolvulus

Other synonyms of hedge bindweed include Convolvulus sepium, wild morning-glory.

hedge bindweed (noun)	Calystegia sepium (noun)
common Eurasian and American wild climber with pink flowers; sometimes placed in genus Convolvulus	common Eurasian and American wild climber with pink flowers; sometimes placed in genus Convolvulus