Category: agreement...

making an agreement to end an argument as soon as one person starts to blame the other
We scarcely find any persons of good sense save those who agree with us.
Harmony seldom makes a headline.
Disagreement makes agreement more precious.
Your life works to the degree you keep your agreements. (W. Erhard)
the earliest use of 'agree' is recorded from Chaucer in c1374 and meant to please or be pleased
agreement as an English word, dates to 1400
agreement in grammar means that sentence parts match - subjects agreeing with verbs and pronouns agreeing with antecedents