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In U.S. publishing, the contents page is generally referred to internally (that is, within the publishing house) as the "Table of Contents" or "TOC"; but the reason for that designation, I think, is to maintain maximum clarity in markup, etc., given that the body copy is generally referred to as "content" (if not "body copy").

Nevertheless, the overwhelmingly more common heading to use for the table of contents in the published book or periodical is simply "Contents"—if any heading is given at all. Books do tend to include that heading, in my experience, whereas periodicals often leave it to the reader to recognize the TOC for what it is. The designation "Table of Contents" seems a bit old-fashioned to me. (English Language & Usage Stack Exchange)