Your 11 year old has LOTS of words they know and can use. They can talk about feelings now as well as actions. Your child will be using grown-up words although sometimes they won’t get it right, e.g. “I had to co-operate really hard to get the work done.”
Your child knows that words can have two meanings and can use them correctly, e.g. watch (the TV and on your wrist), bark (like a dog and on a tree).
Homework help – work with your child to make lists of words for their school topics and use a dictionary together to find out their meanings.
Talk to your child as you would another adult using ‘grown up’ language.