impinge

As a noun taxonomy

is the science or the technique used to make a classification.

As a verb impinge is

to push (transitive: apply a force to (an object) so that it moves away), thrust, shove.

As verbs the difference between impinge and affect

is that impinge is to push (transitive: apply a force to (an object) so that it moves away), thrust, shove while affect is to influence or alter or affect can be (obsolete|transitive) to aim for, to try to obtain.

As a noun affect is

(obsolete) one's mood or inclination; mental state.

As a verb impinge

is to push (transitive: apply a force to (an object) so that it moves away), thrust, shove.

As a noun oxidator is

(obsolete) an oxidizer.