As the time passed, the words were shortened and the word 'shoji' was left out of fusuma-shoji and karakami-shoji, and the word 'akari' was left out of akari-shoji (a translucent screen or sliding door made by pasting single sheets of white Japanese paper on light wooden frames) so that the word shoji became a specific term for a kind of screen, and was no longer used as a general term for all screens.
時代を経るに従い、言葉がつづまり襖障子、唐紙障子の内、「障子」が脱落して襖、唐紙となり、明かり障子は逆に「明かり」が脱落し、障子が固有名詞となり、間仕切りの総称から地位を譲った。