For example in Germany "Mord" ("murder") always requires intent. Unintentional killing is called "Totschlag" (manslaughter), if it was an accident it would be called "fahrlässige Tötung" (reckless killing).
US law seems to make similar distinctions but groups all of them as "murder": https://en.wikipedia.org/wiki/Murder_(United_States_law)
So I'm guessing the strong implication of intent present in e.g. German "Mord" is not present in the English word for most native speakers?