second category

15 LETTERS · STARTS WITH S

second category is a valid 15-letter word worth 23 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1E1C3O1N1D2C3A1T1E1G2O1R1Y4

1 + 1 + 3 + 1 + 1 + 2 + 0 + 3 + 1 + 1 + 1 + 2 + 1 + 1 + 4 =23 PTS

DOUBLE WORD → 46TRIPLE WORD → 69

MEANING

What does second category mean?