What is the difference between type over and insert mode in word processing?

In Word processing, "insert mode" allows users to add new text without deleting existing characters; new text is inserted at the cursor's position, pushing subsequent text to the right. In contrast, "overwrite mode" replaces existing text with new characters as the user types, effectively overwriting the text at the cursor's location. Users can typically toggle between these modes, often using the "Insert" key on their keyboard.