A: In the context of Meta's WhatsApp API, here's what it might mean:

1,000 conversations per month: Meta might allow you to have up to 1,000 conversations with unique users within a month. A conversation is typically defined as a 24-hour window during which you can send and receive messages without incurring additional charges.

And For broadcast there is no limit from WhatBuddy you can send messages according to your limits

Thanks