Trademark law does not seem to care how inherently generic a term is, or about the history of the term. All that matters is whether the term currently serves as

Trademark law does not seem to care how inherently generic a term is, or about the history of the term. All that matters is whether the term currently serves as a distinctive trademark and whether the alleged infringing use is as a competing trademark. This is why it's ok to use the word "entrepreneur" in general, but not as the name of a magazine or "communication product".