As a writer, I know the importance of research and how important it is to be accurate. Being that I am such a helpful person I thought I would bring some clarification to something I read all the time.
How many times have you read in a book, for example, "She blah blah blah and hit her head on the cement." or "I dropped it on the cement floor." Get the idea? Well, the correct thing to say would be concrete.
To clarify, concrete and cement are not the same thing. Cement is a powder and an ingredient in concrete. You could say it is like adding flour to cookies.
Is this inaccuracy ever going to make or break a deal? No, but I see it all the time. It is a common misconception that many highly trained, top notch editors even miss.
This post is based on my own experience with the books I have read. I am not saying all editors miss this. But in my personal library the wrong term is used probably 80% of the time.