mature / full-grown [someone, especially a child or young person, who is mature behaves in a sensible and reasonable way, as you would expect an adult to behave]
balance / equilibrium [a balance between different people, groups, or forces that compete with each other, so that none is stronger than the others and a situation is not likely to change suddenly]
camouflage / disguise [a way or hiding something, especially soldiers and military equipment, by using paint, leaves etc to make it look like the things around it]
