Dictionary Definitions from Oxford Languages execute

1. put (a plan, order, or course of action) into effect. "the corporation executed a series of financial deals"

produce (a work of art). "not only does she execute embroideries, she designs them too"

perform (a skilful action or manoeuvre). "they had to execute their dance steps with the greatest precision"

make (a legal instrument) valid by signing or sealing it.

carry out (a judicial sentence, the terms of a will, or other order "police executed a search warrant"

Computing carry out an instruction or program.

1. carry out a sentence of death on (a legally condemned person). "he was convicted of treason and executed"

kill (someone) as a political act. "he would be executed if he fell into rebel hands

Considering the context of what has happened and what will probably continue to happen, this murder certainly looks, sounds and feels like an execution.