There are several synonyms for the term "joint account" which refers to an account that is shared by two or more individuals. The most common synonym is "shared account," which essentially means the same thing. Other synonyms for joint account include "co-owned account," "combined account," "mutual account," and "partnership account." Some people may also refer to joint accounts as "family accounts" or "couple accounts," especially if the account is held by spouses or family members. Ultimately, the term used to describe a joint account will depend on the context and the relationship between the individuals who hold the account. However, all of these terms essentially refer to the same arrangement, in which multiple individuals share ownership of a single account.