Educate is a very formally used term which refers to teaching. Its noun ‘education’ is a continuous process. For example, a person gets formal education in different stages. Unlike training, it does not require any repetition of exercises or methods. Learning about something is another example of education. It usually does not involve any physical activity, as the purpose is gaining knowledge.
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Train is an important verb, which is generally used for physical training. A person who is already an expert trains others by assigning exercises and supervising them. An individual who gives training is called a trainer.
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