whereat

As conjunctions the difference between whereat and while

is that whereat is at which, or toward which while while is during the same time that.

As a noun while is

an uncertain duration of time, a period of time.

As a verb while is

to pass (time) idly.

Wherewhich is likely misspelled.

Wherewhich has no English definition.

As a conjunction whereat is

at which, or toward which.

As a noun taxonomy

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

As a conjunction whereat is

at which, or toward which.