Basically, vore is about a human being eaten. Yeah. There are different kinds of vore, which I will define here. The most basic aspect is either Soft Vore, or Hard Vore. Hard Vore is more natural, ripping, tearing, that stuff. I find it icky, as you probably find this whole topic. Soft Vore is swallowing whole and alive.
Next is the method of consumption. There is good old normal Oral Vore, and then there's Anal Vore (told you it's weird) and Unbirth, which you can probably figure out. There's also Cock, Hair, and even Bellbottom vore. Yes, it's weird.
Then we have the type of predator. There's humans, furries, and plants, although weirder stuff exists.
There is also the size relation between pred and prey. Giantess Vore, also known as Macro/Micro, deals with abnormally large preds (compared to prey). Same Size is win the pred and prey are the same size.
Then there's willing and unwilling, which is the prey's willingness to be eaten. Some vore is from the preds perspective, some if from the prey's.
The gender of the pred and prey is expressed like this F/M would be a women eating a man.
I prefer Same Size Human Oral with either F/F or F/M, although I can tolerate some Male preds.