OCD is not an adjective it is a noun. Obsessive Compulsive Disorder.

You can not be a "little bit OCD"

Either you have OCD or you don't.

If you want your room to be clean that does not make you OCD

If you move something because it looked crooked you are not OCD.

You are also not a "little bit OCD."

OCD is not a synonym to organized.

If you wash your hands twenty times a day and you have to flip the lights on and off 3 times and close the door twice before you leave a room that might be OCD.

"Everyone is a little OCD" is frankly, a stupid thing to say.

Phobia is an illogical fear that interferes with your daily life. Like if you are claustrophobic you might get an anxiety attack from being in a crowded hallway. It's a paranoid fear. If you have arachnophobia you might not open closed doors just in case a spider might be there.

Someone with Anti social disorder is called a sociopath.

If you accidentally read a word wrong you are not dislexic.

But I still hear people using these words for these purposes all the time. It's ridiculous and people are idiots.