Harmony
What it means
Meaning 1
A state in which people or parts agree and cooperate.
Reach for it when describing peaceful coordination in a relationship, group, or system
The two teams worked in harmony after agreeing on one shared schedule.
Meaning 2
A pleasing combination of simultaneous musical tones.
Reach for it when talking specifically about notes or voices sounding together
The final harmony settled softly beneath the soloist's last phrase.