To associate intimately with; to be close to.
To be similar to, to be almost the same as.
To be adjacent to
A person living on adjacent or nearby land; a person situated adjacently or nearby; anything (of the same type of thing as the subject) in an adjacent or nearby position.
One who is near in sympathy or confidence.
A fellow human being.
To be coworkers with someone; to share a workspace with someone.
To cooperate on a project.
To function together as parts of a larger process.