Though similar in some ways, a food co-op and a CSA are different:
Food co-ops: These involve the cooperative efforts of a group of people or organizations all with the aim of providing food for all members. Food co-ops sell food from many different sources, including regional farms. Friends & Farmers Cooperative will be a brick and mortar store.
Community Supported Agriculture: CSAs involve a consumer (you) purchasing a share from a farmer. In exchange, you receive a weekly box of local food, grown seasonally on the CSA farm. Benefits of a bumper crop are shared equally among CSA members, as are the challenges of a less productive year.