Any babies talking yet?

Starting to get concerned. My son is 14 months old. He still only says “momma” and “dada”. He doesn’t even say momma a lot. He only says it when he feels like it. If I try to get him to say it he purposely says dada. Have your babies vocabulary expanded yet or are they still only saying momma and dada? I try to get him to say other things and he truly has no interest. He just says dada. So I guess I’m just curious where your babies are at.