WhatsApp and texting are both methods of communication over a phone, but there are some key differences between them. Texting is simply the act of sending short messages over a phone network, while WhatsApp is an instant messaging app that allows users to send text messages, audio and video messages, documents and images to other users. Additionally, WhatsApp provides a wide range of other features such as the ability to create and join groups, voice and video calling, and end-to-end encryption for added security.