Can I use any book as a source?
No field that I am aware of has a list of "officially approved sources". So there is nothing which formally forbids you from using a specific source.

However, your work will be judged based on not just its own qualities, but also the sources you use, and how you use them. Quoting a source just because it has a good, concise definition of a term is no big deal. But that same source might not be a good source for facts and numbers. Your average "pop culture" book will not document how those numbers were obtained.

Now for your specific case, I understand that the topic is eating orders, and not the public perception of eating orders or a similar meta-topic. In that case, you will likely be using academic definitions of your terms. So even if the pop literature would offer some concise, readable definitions of particular terms, they would likely not be the definitions used in the other sources that you will be quoting. So be consistent, and use the definitions from the academic sources.