molarity vs molar concentration

molarity and molar concentration both are nouns.

Word	Noun	Adjective	Verb	Adverb
molarity	Yes	No	No	No
molar concentration	Yes	No	No	No

As nouns, molarity and molar concentration are synonyms defined as:

molarity and molar concentration: concentration measured by the number of moles of solute per liter of solution

Other synonyms of molarity include M.

molarity (noun)	molar concentration (noun)
concentration measured by the number of moles of solute per liter of solution	concentration measured by the number of moles of solute per liter of solution