What does “mark” alone mean?
The word “mark” can refer either to a trademark or to a service mark, though “trademark” often refers to either type. “Trademark” in these FAQs refers to service marks also. The fact that one must specify in one’s registration application whether the mark is a trademark or service mark is a vestige from an earlier era when service marks were not registrable under U.S. trademark law, and carries very little significance at this time.