coaction

Working together closely

Coaction is joint action or working together toward a common end.

In psychology, coaction specifically describes the effect of others' presence on individual performance—people often work faster or differently when others perform the same task nearby: The coaction of multiple runners pushed everyone to better times.

The word can also mean coercion or compulsion, though this sense is rare.

collaboration

cooperation

Joint action toward shared aims

alliance · joint effort · working together · combined effort · mutual assistance · synergy · interplay · collaboration · pooling · liaison

biology

symbiosis

Interspecies biological interdependence

complementarity · co-evolution · commensalism · mutual dependence

compulsion

coercion

Pressured compliance through threats

duress · compulsion · obligation · enforcement · imposition · necessity · restraint · mandate · requirement · dictate

physics

resultant

Combined effect of factors

Categories
Opposites
collective vs. individual action

coactionunilateral action

autonomy · self-reliance · going it alone · individualism

cooperation vs. opposition

coactioncounteraction

Neutralizing opposing effort

opposition · antagonism · obstruction · resistance · interference

activity vs. inactivity

coactioninaction

Deliberate nonmovement

inactivity · passivity · stasis · nonaction · idleness

Family

act, action, react, interaction, transaction, enact

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