underbred vs crossbred

underbred and crossbred both are adjectives.

Word	Noun	Adjective	Verb	Adverb
underbred	No	Yes	No	No
crossbred	No	Yes	No	No

underbred (adjective)	crossbred (adjective)
of inferior or mixed breed	bred from parents of different varieties or species
(of persons) lacking in refinement or grace