Myrtaceae vs dicot family

Myrtaceae and dicot family both are nouns.

Word	Noun	Adjective	Verb	Adverb
Myrtaceae	Yes	No	No	No
dicot family	Yes	No	No	No

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

Myrtaceae: trees and shrubs yielding a fragrant oil
dicot family: family of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination

Other hypernyms of Myrtaceae include magnoliopsid family.

Myrtaceae (noun)	dicot family (noun)
trees and shrubs yielding a fragrant oil	family of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination