Where does “carguero” come from?

carguero (Spanish) comes from Spanish carga, from Spanish cargar, from Latin carricāre, from Latin carrus, from Gaulish karros, from Proto-Celtic karros, from Proto-Indo-European ḱr̥sós, from Proto-Indo-European ḱers- — to run.

carguero (Spanish): freighter, cargo ship, carrier, supply ship

Definitions

freighter, cargo ship, carrier, supply ship

Ancestry of “carguero”, step by step

Step	Language	Word	Meaning
1	Spanish	carga	load; burden; cargo
2	Spanish	cargar	to charge; to load; to annoy, pester
3	Latin	carricāre	—
4	Latin	carrus	a wagon, a four-wheeled baggage cart; a cartload,...
5	Gaulish	karros	wagon
6	Proto-Celtic	karros	wagon
7	Proto-Indo-European	ḱr̥sós	vehicle
8	Proto-Indo-European	ḱers-	to run

Every word from Proto-Indo-European ḱers- →Every word from Proto-Indo-European ḱr̥sós →Every word from Proto-Celtic karros →