The 'collaboration' group
These nouns refer to the fact that people do something together. Alliance, cahoots, collusion, league, and partnership are reciprocal nouns.
in chorus in concert in unison in alliance (with ...) in association with ... in cahoots (with ...) in collaboration (with ...) in collusion (with ...) in company (with ...) in co-operation with ... in co-ordination with ... in league (with ...) in partnership with ...
He wrote several hundred songs, often in collaboration with Bobby Hart.
Britain should support stronger rules of engagement, in co-operation with the other European contingents.
We'd like states to act in unison in moves to improve the business climate.
Partnership also has the pattern into N.
In 1938 Fowler went into partnership with Sybil, Lady Colefax, a society decorator with premises at 29 Burton Street, Mayfair.