Hi J.,
I am a speech therapist in the Coppell area. Oh course it is difficult to just advice based on what you wrote, but I will be happy to talk with you more indepth if you would like.
Research says, between 12 and 24 months, infants typically start to develop their vocabulary. By 24 months, literature says they should have about 50 words. And then between 24 and 36 months, the explosion of words occurs and a child's vocabulary literally quadruples.
Now with that being said (don't let that scare you), it is important to point out a couple of things. 1. Boys typically do talk later than girls (the thought is that they develop physically first, crawling, walking and such and communication second). 2. You need to look at how he communicates with you at this point. Is he able to get away with just pointing and gesturing, because you know him so well, that he doesn't have to use words (a very common thing). If this is the case then it is just a matter of teaching him the importance of using words (some times people use sign language as a bridge to words, some people use highly motivating things like food to facilitate this. 3. Is he a second or third child and does his older sibling seem to understand what he wants (basically acting as an interpretter for your son, so he doesn't need to be a clear communicator for you, his interpreter will do it for him). 4. You can always have him evaluated, but typically people wait until 2 years of age especially on boys to see if they just come along naturally. It really may be a matter of giving him the opportunity to communicate. There are some awesome ways to do this. If you would like me to share some detailed activities, or if you want to do a play date some time, I could give you some informal feedback. If you would like to get him formally evaluated you can always ask a private speech-therapist (I do in-home training for parents and in-home therapy for children), or you can contact a speech therapy office (Baylor has Our Children's House, ECI-Early Childhood Intervention has stuff, etc.) By the age of 3, you can go through the schools (if he qualifies, Carrollton should be a good school district to provide services a couple times a week).
Sorry about the long message. This is what I do, my passion, so I tend to be a bit wordy. Let me know if you need any other information or would like activities to try and help him use his language. You are always welcome to call me as well. My number is ###-###-#### and I am in Coppell.
Hope this helps,
~A. E.