molal concentration vs molality

molal concentration and molality both are nouns.

Word	Noun	Adjective	Verb	Adverb
molal concentration	Yes	No	No	No
molality	Yes	No	No	No

As nouns, molal concentration and molality are synonyms defined as:

molal concentration and molality: concentration measured by the number of moles of solute per kilogram of solvent

molal concentration (noun)	molality (noun)
concentration measured by the number of moles of solute per kilogram of solvent	concentration measured by the number of moles of solute per kilogram of solvent