KANJI GUIDE
A leaf. 言葉, the word for language, is literally leaves of speech.
Half of 瑠璃, the deep blue stone. On its own it is used mostly for its sound and its colour.
A younger brother, and anyone junior to you. In 弟子 it means a disciple.
崇拝 is worship; 崇高 is sublime — something so far above you that admiration is the only honest response.