Usage patterns
〈言葉〉の語源を調べるto look up the etymology of a word
I looked up the etymology of the word 'wabi-sabi'.
語源をたどるto trace back the origin of a word
If you trace back this word's etymology, it leads to ancient Chinese.
語源は〜にあるthe etymology lies in ~
The etymology of 'sayounara' lies in the phrase 'sayou de aru naraba'.