describing a period of intense anti-Communist suspicion in the United States that lasted roughly from the late 1940s to the mid to late 1950s.
Language is arbitrary because it is based on social agreement. There is no reason or explanation to why things are named the way they are.
Language is a system of sounds and signs that must be organized according to some patterns in order to achieve communication. Therefore is systematic.
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It's B. T<span>he study of the history or origin of a word</span>