Typographical errors, often called typos, are mistakes made in printed or typed text. These errors can occur due to various reasons, such as hitting the wrong key on a keyboard or misplacing letters when writing. Common examples include misspelled words, incorrect punctuation, or misplaced spaces. Typos can affect the clarity and professionalism of written communication, whether in emails, books, or websites. While most people can easily understand the intended message despite a few errors, excessive typos can lead to misunderstandings or a negative impression of the writer's attention to detail.