unheimlichkeit
A term originating in the psychoanalytic theory of Sigmund Freud in 1919, unheimlichkeit applies to situations wherein the familiar and the ominously strange are represented by the same form.
Unheimlich literally means “unhomely,” and in this sense describes something as discomforting and eerie (familiar, but strange).
Definition adapted from Artnet, August 10, 2016.