Indeed, but a clown is not just a costume, makeup or red nose, but a way of performing that emphasises physical and visual play, usually in a circus play or carnival. In my childhood, there were only a few horror movies with clowns so clowns were more represented hilarity we saw in circus or carnival.
In a way though, clowns, especially ones that use magic tricks, also present themselves as freakishly coloured people who can defy reality. Such as fitting twelve clowns in a Peel P50.
There is also the theory connecting Nephilim to clowns suggests that the ancient, giant offspring of fallen angels (Watchers) and humans, as described in Genesis and Enoch, were the original, terrifying inspiration for modern clown figures. Proponents, notably Paul Stobbs in his book
The Nephilim Looked Like Clowns: Volume I: The History, argue that Nephilim had pale skin, red hair, and blood-stained faces, which evolved into the makeup and costume of modern clowns.