marchioness vs marquise

marchioness and marquise both are nouns.

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

As nouns, marchioness and marquise are synonyms defined as:

marchioness and marquise: a noblewoman ranking below a duchess and above a countess

marchioness (noun)	marquise (noun)
a noblewoman ranking below a duchess and above a countess	permanent canopy over an entrance of a hotel etc.
the wife or widow of a marquis	a noblewoman ranking below a duchess and above a countess