Xylomelum vs magnoliopsid genus

Xylomelum and magnoliopsid genus both are nouns.

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

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

Xylomelum: small species of Australian trees or shrubs; grown for their fruit and flowers
magnoliopsid genus: genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination

Other hypernyms of Xylomelum include dicot genus.

Xylomelum (noun)	magnoliopsid genus (noun)
small species of Australian trees or shrubs; grown for their fruit and flowers	genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination