Clethra vs magnoliopsid genus

Clethra and magnoliopsid genus both are nouns.

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

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

Clethra: type and sole genus of the Clethraceae; deciduous shrubs or small trees: white alder, summer-sweet
magnoliopsid genus: genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination

Other hypernyms of Clethra include dicot genus.

Clethra (noun)	magnoliopsid genus (noun)
type and sole genus of the Clethraceae; deciduous shrubs or small trees: white alder, summer-sweet	genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination