Answer: cardinalnumbers

AnswerCrossword Clue
CARDINALNUMBERSTwo and three, e.g.
CARDINALNUMBERS16, 101 and 947
CARDINALNUMBERSTeens, for example
CARDINALNUMBERS1, 2, 3, etc.
CARDINALNUMBERSMusial's 6 and Gibson's 45?
CARDINALNUMBERSThey denote a quantity but not the order