robed vs dressed

robed and dressed both are adjectives.

Word	Noun	Adjective	Verb	Adverb
robed	No	Yes	No	No
dressed	No	Yes	No	No

As adjectives, robed and dressed are synonyms defined as:

robed and dressed: dressed or clothed especially in fine attire; often used in combination

Other synonyms of robed include appareled, attired, garbed, garmented, habilimented.

robed (adjective)	dressed (adjective)
dressed or clothed especially in fine attire; often used in combination	dressed or clothed especially in fine attire; often used in combination
	(of lumber or stone) to trim and smooth
	treated with medications and protective covering
	dressed in fancy or formal clothing