tag line 
noun North American informal
A catchphrase or slogan, especially as used in advertising, or the punchline of a joke: ‘struggling to save their marriage’ is a tabloid tag line that has become permanently affixed to the couple...
- The National Thoroughbred Racing Association introduced a new advertising campaign with the tag line, ‘Who do you like today?’
- McKinnon suggested a possible tag line: ‘He's been wrong for 32 years, he's wrong now.’
- But occasionally a tag line is great, and it makes a difference.
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- supercollider
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- superconducting
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- superconductive
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- superconscious
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- supercrescence