I just got elected to city council - this is a  legislative body  that governs my town.
Really? What does city council do?
They pass bylaws, and budget for things like snow removal.  They also hold meetings to answer questions from their constituents
Ok like town hall meetings. What else does the city council do?
Sometimes they re-align boundaries especially when the town is growing by quite a bit.
Is that like zoning?
No, it's more like extending the town limits.  But overall, a specific definition of City Council can vary