ashanti pepper vs Piper

ashanti pepper and Piper both are nouns.

Word	Noun	Adjective	Verb	Adverb
ashanti pepper	Yes	No	No	No
Piper	Yes	No	No	No

As nouns, Piper is a hypernym of ashanti pepper; that is, Piper is a word with a broader meaning than ashanti pepper:

ashanti pepper: spice derived from the dried fruit of Piper guineense; very similar to cubeb pepper but is much less bitter and has a fresher more herbaceous flavour.
Piper: type genus of the Piperaceae: large genus of chiefly climbing tropical shrubs

Other hypernyms of ashanti pepper include genus Piper.

ashanti pepper (noun)	Piper (noun)
spice derived from the dried fruit of Piper guineense; very similar to cubeb pepper but is much less bitter and has a fresher more herbaceous flavour.	type genus of the Piperaceae: large genus of chiefly climbing tropical shrubs