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I hope that you're marking this special day with Friends. In honour of the occasion, please divide the following words into sets. Each set is associated to a thematic word, which you should identify. At the end you might find a message.
| BALGOWNIE | BALKAN | BALTIC | BOMBO | CASH |
| CATARACT | CHLOE | CLINTON | CORDIALE | DILLON |
| DONG | GALE | KENT | MACARTHUR | MONTEZUMA |
| PAPI | POBBLE | QUAKE | QUANGLE-WANGLE | TREMOR |
| WAVE |
HINT:
The thematic words are structurally linked to the "special" day; none of them are the name of a person. If I were to give Trivial Pursuit colours to the thematic words, they might be
* Green
* Yellow
* Blue (though with Pink in the set)
* Blue (though with Yellow in the set)
* Pink
* Blue
* Purple
HINT 2:
HINT 3:
Six of the words are surnames; two of the thematic words are very similar.
HINT 4:
The surname GALE belongs to Dorothy
HINT 5:
The surname KENT belongs to Clark
