unremarkable vs workaday

unremarkable and workaday both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unremarkable	No	Yes	No	No
workaday	No	Yes	No	No

As adjectives, unremarkable and workaday are synonyms defined as:

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

unremarkable (adjective)	workaday (adjective)
found in the ordinary course of events	found in the ordinary course of events