Agreed
Part of speech: verb
Definition: To harmonize in opinion, statement, or action; to be in unison or concord; to be or become united or consistent; to concur.
Part of speech: interjection
Definition: Indicates agreement on the part of the speaker.
Example sentence: Consider this: Whenever someone is bothering you, and they just won't let up, and they won't listen to anything you have to say, what do you tell them to get them to shut up and go away? 'You're right.' It works every time. But you haven't agreed to their position. You have used 'you're right' to get them to quit bothering you.
United
Part of speech: adjective
Definition: Joined into a single entity.Involving the joint activity of multiple agents.
Part of speech: verb
Definition: To bring together as one.