不文律:

(rare) Short for 白氏文集 (Hakushi Bunshū): a collection of Chinese poetry completed in 845 CE

calling the spirits of the dead / spiritualism

to call, contact, or communicate with the spirits of the dead, to act as a medium

構文論: (linguistics) syntax (as a field of study), syntactics

分光法: spectroscopy

(Internet slang) an excessively cutesy style of writing stereotypically used by middle-aged men (thus making it inappropriate and creepy) on the LINE messaging app

official documents

branch school, branch campus

a spectrum