what even is a blog?

hey guys, i don't know what blog means but i assume it just means say whatever you want and post, so that's what I'm going to do, i guess i will write about how i am bored as fuck right now and none of you fellas wanna accept my friend request, so hurry up. I'm passing the time by watching this show called "all of us are dead" its pretty entertaining but its scary as fuck, anyways I'm done with this blog thing for today bye