We civilized folks have as many varieties of murder as the Inuit do of snow.
Lawyers and legislators have Murder One, Murder Two, Manslaughter, etc.
Before those niceties, there were “crimes of passion” distinguished from “cold-blooded murder.”
We regularly make distinctions worthy of a Benthamic criminologist, carefully separating spree murderers from serial killers from mass murderers.
And then there are the synthetic constructions, worthy of Polonius. My favorite is “serial mass murderer.”
That applies to U.S. presidents, especially the current one.