i know it is probably just a made up word but it is the only way i can describe the art of thought blocking in my head,
it says in hp that Occlumency is the art of protecting ones mind from external penetration by a Ligilimens now idk about external force as i would call it it an internal force within my mind, i would say that i am not only an Occlumens but i also practice Ligilimens on myself but they are just different parts of my mind acting on each other,
when i Ligilimens myself i instantly Occlumens myself, the art of thought blocking is a reaction to a penetrating thought or an intrusive thought that should not be there or just ‘falls through the cracks’
the mind surely is a complicated thing.