A close, prolonged association between two or more organisms of different species that normally benefits both members. An interspecies cooperation.
The occurrence of two different or opposing things in the same time and place.
A close, prolonged association between two or more organisms of different species, regardless of benefit to the members.
The state of people of different types, races, cultures, communities, etc., living together.
A relationship of mutual benefit, especially among different species.
synergy
The theological doctrine that salvation is brought about by a combination of human will and divine grace