An extrovert is a person who encompasses particular personality traits that include being outgoing, sociable, energetic, talkative, and positive. Typically, someone who draws energy from being around and in contact with other people.
An introvert is a person who generally has personality traits that include enjoying one’s own company, have a small group of friends, comes across shy at first, and comfortable in their inner thoughts. Typically, someone who feels drained of energy when being around lots of people and draw energy and recharges with spending some time with themselves.
One does not necessarily need to be one or the other and can range between extrovert and introvert.