What do you call both persons involved in a transaction?

What do you call both persons involved in a transaction?

E.g. Alice gives 5$ to Bob, Bob is a recipient. But what name can I give them both?


They are parties to the transaction.

See Black's Law Dictionary (West 1979), p. 1010, which defines "party" (in part) as

"[a] person concerned or having or taking part in any affair, matter, transaction, or proceeding considered individually."


"Participants". 'Actors'. Transactors.


Participants

Enlisting Resources as Participants in a Transaction