Thriller VS Horror Film

I don't care for slasher films. I like my horror to be more subtle. My last column was about horror films that don't get the attention they deserve. I noticed something odd while doing research for this column. All of the films I chose are called thrillers instead of horror. One has ghosts, one has zombies, one has Satan, they all have supernatural elements but at least one critic chose to label them all as thrillers, usually psychological thrillers. I suspect this is more snobbiness at work. If something is good and interesting it can't be horror because all horror sucks by definition. That's the mindset we're seeing here. It's kind of funny in a sad little way.