alkanet vs anchusa

alkanet and anchusa both are nouns.

Word	Noun	Adjective	Verb	Adverb
alkanet	Yes	No	No	No
anchusa	Yes	No	No	No

As nouns, anchusa is a hypernym of alkanet; that is, anchusa is a word with a broader meaning than alkanet:

alkanet: perennial or biennial herb cultivated for its delicate usually blue flowers
anchusa: any of various Old World herbs of the genus Anchusa having one-sided clusters of trumpet-shaped flowers

alkanet (noun)	anchusa (noun)
perennial or biennial herb cultivated for its delicate usually blue flowers	any of various Old World herbs of the genus Anchusa having one-sided clusters of trumpet-shaped flowers