demerit
noun
°A quality of being inadequate; a fault; a disadvantage.
congruence
noun
°The quality of agreeing or corresponding; being suitable and appropriate.
°(mathematics number theory) a relation between two numbers indicating they give the same remainder when divided by some given number.
synonyms: congruency, congruity
exuberance
noun
°The quality of being exuberant; cheerful or vigorous enthusiasm; liveliness.
°An instance of exuberant behaviour.
synonyms: ebullience