everyday vs mundane

everyday and mundane both are adjectives.

Word	Noun	Adjective	Verb	Adverb
everyday	No	Yes	No	No
mundane	No	Yes	No	No

As adjectives, everyday and mundane are synonyms defined as:

Other synonyms of everyday include quotidian, routine, unremarkable, workaday.

everyday (adjective)	mundane (adjective)
commonplace and ordinary	belonging to this earth or world; not ideal or heavenly
appropriate for ordinary or routine occasions	found in the ordinary course of events
found in the ordinary course of events	concerned with the world or worldly matters