How much does/did your child talk at 18mths?

My son just turned 2 a week ago and didn't say more than about 10 words until around 22 months. Before that it was just basic mama, dada, cat. Now he can name all his body parts, all the colors, tons of animals and their sounds, and uses 2-3 word sentences. He went from a few words to all that in the span of a month. He'll talk when he's ready.