verb

Officially attach or connect (a subsidiary group or a person) to an organization.

they are national associations affiliated to larger organizations

associate with,be in league with,unite with,combine with,join with,join up with,join forces with,ally with,form an alliance with,align with,amalgamate with,merge with,coalesce with,federate with,confederate with,form a federation with,form a confederation with,team up with,band together with,cooperate with

noun

A person or organization officially attached to a larger body.

the firm established links with American affiliates

office,bureau,agency