Agreements are clearly defining who will do what by when, then all people agree. Agreements allow people to honor their word and set clear boundaries.

Expectations are unclear and set us up for disappointment when they aren’t met and a “okay, that’s what you were supposed to do” meh-feeling when they are.

Conscious Leadership Group might be the most underrated source of excellent (free) leadership and management resources that I'm aware of. https://conscious.is/resources