συμφωνέω/sumphōneō

This word is an action. It is a verb.

This word can mean to agree. It is used to talk about two or more people believing the same thing about something.
This word can mean to make an agreement or a decision to do something.
This word can mean to come to an agreement. This is used to talk about two or more people wanting to do different things, discussing it, and deciding together what to do.
This word can mean to be very much alike.