In what sense is language arbitrary? answer in complete sentences.

Language can be arbitrary in the sense that you pick and chose. The idea that what someone says can decide for themselves or another. That, someone can even change or do things based upon language. It's what helps or hurts people. The idea that one can do so much using language is what makes it arbitrary. 

(P.s I may or may not be correct, but that's how I view it. d:)