antiknock

As nouns the difference between taxonomy and antiknock

is that taxonomy is the science or the technique used to make a classification while antiknock is such a substance, usually tetraethyl lead (also mmt, mtbe and ethanol).

As an adjective antiknock is

of an additive added to petroleum/gasoline to reduce the occurrence of engine knock.

Antiknock is a synonym of knockproof.

As adjectives the difference between antiknock and knockproof

is that antiknock is of an additive added to petroleum/gasoline to reduce the occurrence of engine knock while knockproof is preventing or reducing the occurrence of engine knock.

As a noun antiknock

is such a substance, usually tetraethyl lead (also mmt, mtbe and ethanol).