Horror vs Thriller... Which Will it Be?

So after some discussion, my group has discussed the possibility of creating a title sequence for a thriller film rather than horror. Initially, we had thought horror and thriller were pretty much the same thing (with some minor differences) but with some research I found that they do have their own separate characteristics which make them unique from each other⇩⇩⇩Here is the link from which I got my information. (Link)

Thriller:

• Psychologically scares audience
• Aims to make the audience question events and contemplate what they just watched afterwards
• Occurrences are more realistic
• Typically contains a twist or a mystery; aims to make the audience feel shocked or "on the edge of their seat", not horrified

Horror:

• Aims to scare the audience by scary masks, gore, torture, etc.
• "Jump Scare", makes the audience scream or shake from fear
• Revolves around repulsive or horrific occurrences
• Aims to make the audience have nightmares
• Less realistic events (coming back from the dead, possessions, etc.)

In order to prepare for the possibility of our project following more closely to a thriller, I've decided to analyze the title sequence from the thriller movie "Get Out". From personal experience, I know that this film definitely scared me psychologically. I wasn't horrified after leaving the theatre but instead I was contemplating and questioning what I had just watched, because the events seemed extremely realistic yet so twisted... it "thrilled" me.

The most noticeable detail about this thriller title sequence is that the events give off an extremely realistic vibe. First, we have who we can identify as the protagonist walking down the street at night time in the suburbs. The character was talking to his girlfriend on the phone, his costuming was very casual, and even his actions represented normality as he turned in the other direction once he noticed the car was following him. This differs sharply from horror films as they typically aim to scare you immediately with a spooky, isolated setting, creepy characters/makeup/costuming, or just presenting events that would be identified as unrealistic yet still scary. This clip, however, appears very realistic. But right from the start we as an audience are questioning the events, such as "Why is this car following him?" "Why is the driver door open?" "Why is this man being drug unconscious into the back of a car?" These questions pop up as a result of the film's events purposefully trying to get into our minds and have us wanting to know more information. Yet we're not scared, just simply full of suspense. Another aspect of this clip that sharply differs from horror is the lack of violence shown. We know by context clues that the protagonist was strangled and drug into the trunk of a car. However, we did not see any actual violence: low key lighting was used so we could not see any signs of suffering on the protagonists face, no weapons or dangerous props were shown and no blood was splattered. A horror film would typically amplify these aspects to make the audience feel fear. In this case, however, we are asking why did this happen? Along with that, sound was used in a different way as well. Horror films tend to use spooky ambient sound such as footsteps or non-diegetic sound to make the audience feel fear towards what will happen next. In this scenario, we saw onscreen, diegetic sound coming from the stereo in the car. The music was upbeat and happy rather than eerie, which makes the audience thirsty for more information.