What is accept vs add on snapchat?

Accept on Snapchat refers to the action of approving a friend request sent by another user. When someone sends you a friend request on Snapchat, you have the option to either accept or decline it. If you accept the request, you will be added to each other's friends list, and you can start exchanging snaps, messages, and stories.

Add on Snapchat refers to the process of adding a new contact to your friends list on the app. You can add a friend on Snapchat by entering their username or scanning their Snapcode. Once you have added them, they will receive a notification asking them to accept your friend request, and if they do, you can start communicating with them on the app. Adding someone on Snapchat does not guarantee that they will add you back, and you will not be able to see their snaps, messages, or stories until they accept your request.