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In linguistics, code-switching occurs when a speaker alternates between two or more languages, or language varieties, in the context of a single conversation.peakers form and establish a pidgin language when two or more speakers who do not speak a common language form an intermediate, third language. On the other hand, speakers practice code-switching when they are each fluent in both languages.
Examples and Observations:  1  Code-switching performs several functions (Zentella, 1985). 2  First, people may use code-switching to hide fluency or memory problems in the second language (but this accounts for about only 10 percent of code switches). First, people may use code-switching to hide fluency or memory problems in the second language (but this accounts for about only 10 percent of code switches).