canyon oak vs maul oak

canyon oak and maul oak both are nouns.

Word	Noun	Adjective	Verb	Adverb
canyon oak	Yes	No	No	No
maul oak	Yes	No	No	No

As nouns, canyon oak and maul oak are synonyms defined as:

canyon oak and maul oak: medium-sized evergreen of southwestern United States and northwestern Mexico with oblong leathery often spiny-edged leaves

Other synonyms of canyon oak include canyon live oak, iron oak, Quercus chrysolepis.

canyon oak (noun)	maul oak (noun)
medium-sized evergreen of southwestern United States and northwestern Mexico with oblong leathery often spiny-edged leaves	medium-sized evergreen of southwestern United States and northwestern Mexico with oblong leathery often spiny-edged leaves