addition

As nouns the difference between addition and additional

is that addition is the act of adding anything while additional is something added.

As an adjective additional is

supplemental or added to something.

As nouns the difference between addendum and addition

is that addendum is something to be added; especially text added as an appendix or supplement to a document while addition is the act of adding anything.

As nouns the difference between taxonomy and addition

is that taxonomy is the science or the technique used to make a classification while addition is addition.

As nouns the difference between addition and annumeration

is that addition is addition while annumeration is (obsolete) addition to a former number.

As nouns the difference between addition and gyrovector

is that addition is addition while gyrovector is (mathematics) a type of vector for which addition is defined by a formula that satisfies the axioms for a gyrogroup.

As nouns the difference between addition and upheaping

is that addition is addition while upheaping is ascension; addition to full measure, accumulation.

As nouns the difference between addition and trifluoromethylation

is that addition is addition while trifluoromethylation is (organic chemistry) the addition of a trifluoromethyl group to a molecule.

As nouns the difference between addition and readdition

is that addition is addition while readdition is a second or subsequent addition, especially following removal.

As a noun addition

is addition.

As an adjective superadditional is

being a superaddition; added on top of a previous addition.

As nouns the difference between addition and hydropalladation

is that addition is the act of adding anything while hydropalladation is the addition of the elements of palladium hydride across a double bond or triple bond.