Where does “nergradering” come from?

nergradering (Swedish) comes from Swedish nergradera, from Swedish gradera, from Swedish era, from Latin āera, from Latin aes, from Proto-Italic aos, from Proto-Italic ajos, from Proto-Indo-European h₂éyos — a metal, copper, bronze.

Ancestry of “nergradering”, step by step

StepLanguageWordMeaning
1Swedishnergradera
2Swedishgraderato grade, to rank
3Swedisherayour, yours; you; era
4Latināeraera or epoch from which time is measured
5Latinaesmoney, pay, fee, fare; copper, bronze, brass;...
6Proto-Italicaosbronze, copper
7Proto-Italicajos
8Proto-Indo-Europeanh₂éyosa metal, copper, bronze
Every word from Proto-Indo-European h₂éyosEvery word from Proto-Italic ajosEvery word from Proto-Italic aos