Yeah. Haley has it down. Warlocks know a singular school where Witches know three sometimes four. Witches tend to have a higher base level of magic, so a fireball from a witch is generally more powerful than a warlocks.

I based the magic of the DnD schools to make it easier for people to come up with possible magics and spells. That way people could Google a spell list for inspiration. But you don't have to stick to it, so long as a spell matches one of the schools of magic, go wild!