Where does “Pompeji” come from?

Pompeji (Latin) comes from Oscan *pompe, from Proto-Italic kʷenkʷe, from Proto-Indo-European pénkʷe — five.

Ancestry of “Pompeji”, step by step

StepLanguageWordMeaning
1Oscan*pompefive
2Proto-Italickʷenkʷefive
3Proto-Indo-Europeanpénkʷefive

Words derived from “Pompeji”

Every word from Proto-Indo-European pénkʷe →Every word from Proto-Italic kʷenkʷe →Every word from Oscan *pompe →