Agreeing means to concur with another's thoughts, words, or actions.
While being agreeable means to be pleasant, congenial, and grateful.
A strong fictional example of a character with an agreeable disposition: Sylvester Stallone's Rocky Balboa character in the movie Creed.
People who are characteristically agreeable tend to cope and adjust well to their environments and are better
equipped to manage interpersonal stress and conflict.