Catchword and Trademark

Catchword noun - A word printed at the top of the page of a dictionary or other reference book to indicate the first or last item on that page.

Trademark and catchword are semantically related. In some cases you can use "Trademark" instead a noun "Catchword".

Trademark noun - A device (as a word) identifying the maker of a piece of merchandise and legally reserved for the exclusive use of that person or company.

Catchword and trademark are semantically related. Sometimes you can use "Catchword" instead a noun "Trademark".