crucify

As a verb crucify

is to execute (a person) by nailing to a cross.

As a noun pesticide is

anything, especially a synthetic substance but also any substance (eg sulfur), or virus, bacterium, or other organism, which kills or suppresses the activities of pests.

As a noun taxonomy

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

As a verb crucify is

to execute (a person) by nailing to a cross.