The word permit is often used when referring to an official license or document granting the right to do something. You might require a permit to build an extension on your house, for example. It implies a formal permission process, usually involving an application and approval from a governing body or authority.

Permission is used to denote consent or approval from someone who has the power to grant it. Asking for permission is a basic social rule typically observed in personal interactions. Parents often teach their children to ask for permission before taking or using something that doesn't belong to them. Permission may not require a formal process but is still a necessary step for ethical conduct.

While both permit and permission pertain to the concept of consent, they differ in their form and context of use. A permit usually means a formal official document required for certain actions, while permission is a broader term for consent that can be given verbally or in writing and may not always involve a formal process. Understanding when to use each can help in proper communication, especially in legal or formal settings.