Etymon
pie-ke-protoindoeuropean-kom-protoitalic-kom-protoitalic-kom-latin-com-protoindoeuropean-med-protoindoeuropean-os-protoitalic-medos-latin-modus-latin-commodus-protoindoeuropean-teh2-protoindoeuropean-ts-protoindoeuropean-teh2ts-protoitalic-tats-latin-tas-latin-commoditasder
A dedicated page for this root is on the way — it will gather every word descended from it, sibling forms across daughter languages, and a branching map of the family tree.