Piper vs magnoliopsid genus

Piper and magnoliopsid genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Piper	Yes	No	No	No
magnoliopsid genus	Yes	No	No	No

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

Piper: type genus of the Piperaceae: large genus of chiefly climbing tropical shrubs
magnoliopsid genus: genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination

Other hypernyms of Piper include dicot genus.

Piper (noun)	magnoliopsid genus (noun)
type genus of the Piperaceae: large genus of chiefly climbing tropical shrubs	genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination