finger-flower vs foxglove

finger-flower and foxglove both are nouns.

Word	Noun	Adjective	Verb	Adverb
finger-flower	Yes	No	No	No
foxglove	Yes	No	No	No

As nouns, foxglove is a hypernym of finger-flower; that is, foxglove is a word with a broader meaning than finger-flower:

finger-flower: 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 finger-flower include digitalis.

finger-flower (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