throatwort vs bellflower

throatwort and bellflower both are nouns.

Word	Noun	Adjective	Verb	Adverb
throatwort	Yes	No	No	No
bellflower	Yes	No	No	No

As nouns, bellflower is a hypernym of throatwort; that is, bellflower is a word with a broader meaning than throatwort:

throatwort: European bellflower with blue-purple to lilac flowers formerly used to treat sore throat
bellflower: any of various plants of the genus Campanula having blue or white bell-shaped flowers

Other hypernyms of throatwort include campanula.

throatwort (noun)	bellflower (noun)
European bellflower with blue-purple to lilac flowers formerly used to treat sore throat	any of various plants of the genus Campanula having blue or white bell-shaped flowers