join

be or become joined or united or linked

“Our paths joined”

a set containing all and only the members of two or more given sets

become part of; become a member of a group or organization

“He joined the Communist Party as a young man”

make contact or come together

“The two roads join here”

the shape or manner in which things come together and a connection is made

cause to become joined or linked

“join these two parts so that they fit together”