dame vs lady

dame and lady both are nouns.

Word	Noun	Adjective	Verb	Adverb
dame	Yes	No	No	No
lady	Yes	No	No	No

As nouns, dame and lady are synonyms defined as:

Other synonyms of dame include gentlewoman, ma'am, madam.

dame (noun)	lady (noun)
informal terms for a (young) woman	a woman of refinement
a woman of refinement	a polite name for any woman