PREFIX
Means TOGETHER
CO-
Say two nouns using CO- prefix
Cooperate. Coordinate. Coexist
Means OUT
E- or Ex-
Say two nouns using E- or Ex- prefix
Exile. Emigration.
Related to ENVIRONMENT
ECO-
Say two nouns using Eco- prefix
Ecofriendly. Ecosystem.
Means BETWEEN
INTER-
Say two nouns using Inter- prefix
Interconnected. International.
INTRA-
Say two nouns using Intra- prefix
Intrabdominal. Intracellular