Is Permaculture Only Food Forests?

Alright, so whenever I hear about “permaculture” I always hear about swales and polycultures and food forests and so on and so on. It’s not like I have any problem with all of this (I think a career in this sort of design might be fun), it’s just that I was wondering if permaculture was just a method to design food forests or if there’s anything else. It seems like YouTube and other online media focus on either food forests for large-scale areas and teensy-weensy little flower gardens for suburban backyards.