Astronium vs dicot genus

Astronium and dicot genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Astronium	Yes	No	No	No
dicot genus	Yes	No	No	No

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

Astronium: a genus of dicotyledonous plants of the family Anacardiaceae
dicot genus: genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination

Other hypernyms of Astronium include magnoliopsid genus.

Astronium (noun)	dicot genus (noun)
a genus of dicotyledonous plants of the family Anacardiaceae	genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination