The numbers vary but by age two a spoken vocabulary of at least 50 words is the average. Some children say upwards of 150 which is great, while others with a vocabulary of 25 words or less is considered a “late talker”.
Aside from the numbers, other things to consider include:
The clarity of speech
Are your child’s words clear or lacking mis-articulations, omissions, or substitutions. How clear is his/her speech to peers, or non-family members.
Does your child exhibit good eye contact when speaking? Is eye contact sporadic, or non-existent?
Comfort level when speaking
How comfortable is your child when speaking? Do they avoid speech tasks, or prefer other means of communication e.g. will just go get an item vs. asking for it. Do they look away and remain quiet when asked to name an object or respond to a simple question. Do they appear frustrated?
How well does your child respond to spoken directions. If you ask “please get me your shoes?”, “Do you want milk or juice?” Do they act appropriately.
How speech and language gains trend over a period weeks and months. Are their more sounds, words, phrases being produced? Do gains appear few and far between, or do things appear to be just staying the same.
If anything pointed out here raises a concern, discussing the matter with your pediatrician, early intervention center, local speech therapist, or school district may prove to be a good idea.
Kids differ widely in the way they acquire speech and language. The good news is there are many avenues available which can help and often a little push may be all that’s needed. Two is the age when the foundation for speech and language is built. It’s a time about becoming the person your meant to be.