fairy bell vs foxglove

fairy bell and foxglove both are nouns.

Word	Noun	Adjective	Verb	Adverb
fairy bell	Yes	No	No	No
foxglove	Yes	No	No	No

As nouns, foxglove is a hypernym of fairy bell; that is, foxglove is a word with a broader meaning than fairy bell:

fairy bell: tall leafy European biennial or perennial having spectacular clusters of large tubular pink-purple flowers; leaves yield drug digitalis and are poisonous to livestock
foxglove: any of several plants of the genus Digitalis

Other hypernyms of fairy bell include digitalis.

fairy bell (noun)	foxglove (noun)
tall leafy European biennial or perennial having spectacular clusters of large tubular pink-purple flowers; leaves yield drug digitalis and are poisonous to livestock	any of several plants of the genus Digitalis