courtly vs stately

courtly and stately both are adjectives.

Word	Noun	Adjective	Verb	Adverb
courtly	No	Yes	No	No
stately	No	Yes	No	No

As adjectives, courtly and stately are synonyms defined as:

courtly and stately: refined or imposing in manner or appearance; befitting a royal court

Other synonyms of courtly include formal.

courtly (adjective)	stately (adjective)
refined or imposing in manner or appearance; befitting a royal court	refined or imposing in manner or appearance; befitting a royal court
	impressive in size, manner, or appearance
	of size and dignity suggestive of a statue