darkroom [darkrooms]◼◼◼(dark room where photographs are developed) noun [UK: ˈdɑː.kruːm] [US: ˈdɑːr.ˌkruːm]
camera obscura◼◼◻(darkened chamber in which the image of an outside object is projected and focused onto a surface) noun [UK: ˈkæ.mə.rə] [US: ˈkæ.mə.rə]