speech/language delay?

Hi mga mommies. My baby boy is 18 months old. Worried lng ako kasi other babies na ka age nia marami ng words na nsasabi. I know children develope in different paces pero im gonna ask na rin. If its normal. He can say,dada,mama, imitate animal sounds, and imitate other types of sounds. And he can point to his body parts very well. Pero wala sya masyadong nasasabing words? Is that nornal? I really hope it is. ?