Can you please explain the difference between formal and informal Writing style?

Submitted by: Muhammad
The difference between formal and informal styles is mainly in the vocabulary. Informal words are the ones used in everyday conversations and formal are used in books, contracts, business letters and essays. If the task requires formal writing - avoid using informal vocabulary. If the task requires informal writing, such as a letter to a friend, avoid using formal 'heavy' words.
Submitted by: Muhammad

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