Formal+vs.+informal+language

Okay formal vs informal language. For example: This **isn't** the the thing I **wasn't** worried about. Using "isn't" and wasn't" makes the sentence informal.
 * Informal** language is using contractions is your paper. It makes is sound... more, easy to say a bit.

.For example: This is not the object I was not concerned with.
 * Formal** language does not consist of contractions. Makes it seem more serious about what ever you write/speak about

Yeah......

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