the.com/interdependence

means The state where two or more people, groups, or systems rely on each other and are each affected by the others' actions.

from Built from 'inter-' (Latin for 'between, among') plus 'dependence,' from Latin 'dependere' — 'to hang down from' — the same image behind words like 'pendant.' So at bottom it's literally 'hanging from one another,' a nicely physical picture for something we usually describe abstractly. The word came into English use as 'independence' alone stopped being enough to describe tangled modern relationships — between nations, ecosystems, economies — where nobody really hangs free.