語源学: etymology (study of the historical development of languages, particularly of individual words)

言語学: linguistics - study of language.

a university; a college

academic major

specialize in, major in

内言語: internal language

外言語: external language

語源: etymology

言語: language / 原語: the original language

元号: An era name. / 減劫: (Buddhism) A process whereby human lifespans decline from 80,000 years to 10 years, decreasing by one year each year or each century. / 減号: The negative or minus sign. / 賢劫: