A defined benefit plan (like traditional, formula, target benefit and other plans) pays out a specified monthly benefit at retirement that is usually determined through a formula using factors like salary and length of service.
A cash balance plan is a mixture of a defined benefit and a defined contribution plan. Your monthly retirement is fixed and you see your account balance grow each month.
If a company converts to a cash balance plan from a traditional defined benefit plan, long-service employees often don't see their balances grow more than their fixed benefits.
There are other types of deferred contribution plans like 401(k)s, 403(b)s, ESOPs, profit-sharing, SEPs, and more. Read about other types of pension plans at the
Department of Labor website.