Data is facts, observations, and questions about something. Content can be cookies, words, documents, images, videos, or whatever you’re arranging or sequencing.
The difference between information, data, and content is tricky, but the important point is that the absence of content or data can be just as informing as the presence.
For example, if we ask two people why there is an empty spot on a grocery store shelf, one person might interpret the spot to mean that a product is sold-out, and the other might interpret it as being popular.
The jars, the jam, the price tags, and the shelf are the content. The detailed observations each person makes about these things are data. What each person encountering that shelf believes to be true about the empty spot is the information.