The primary difference between an extrovert and an introvert is in how they draw energy from the environment. Extroverts gain energy from social interactions, whereas introverts tend to prefer time alone to recharge. Extroverts tend to be outgoing, speaking openly and expressing themselves with ease, whereas introverts may be more reserved and private. However, there is a lot of overlap between the two, as not every extrovert is outgoing and every introvert may still enjoy social settings.