Neither of mine were saying any words at that age. DD2 was about 20 odd months before she started saying words, DD1 more like 26 months. The main people in their lives (me, DH, and my parents) have always talked incessantly to/with them, read lots of books together etc so when their words came it was very slow to begin with but then oh my goodness they came!! Now at 4 and 5, I would love to find the off switch sometimes ;-)