marquise vs Lady

marquise and Lady both are nouns.

Word	Noun	Adjective	Verb	Adverb
marquise	Yes	No	No	No
Lady	Yes	No	No	No

As nouns, Lady is a hypernym of marquise; that is, Lady is a word with a broader meaning than marquise:

Other hypernyms of marquise include noblewoman, peeress.

marquise (noun)	Lady (noun)
permanent canopy over an entrance of a hotel etc.	a woman of the peerage in Britain
a noblewoman ranking below a duchess and above a countess