numerator

As nouns the difference between numerator and molecule

is that numerator is the number or expression written above the line in a fraction (thus 1 in ½) while molecule is the smallest particle of a specific element or compound that retains the chemical properties of that element or compound; two or more atoms held together by chemical bonds.

is likely misspelled.

has no English definition.

As a noun numerator

is the number or expression written above the line in a fraction (thus 1 in ½).

As nouns the difference between taxonomy and numerator

is that taxonomy is the science or the technique used to make a classification while numerator is (arithmetic) the number or expression written above the line in a fraction (thus 1 in ½).

As nouns the difference between numerator and mediant

is that numerator is (arithmetic) the number or expression written above the line in a fraction (thus 1 in ½) while mediant is (music) the third degree of the diatonic scale.