Language is the organization of sounds or symbols that are used to communicate thoughts or feelings.
Language consists of content, form, and use.
How we say something refers to our form.
What we say refers to the content of our language. Why we say something refers to our use of language.
Receptive language refers to the skills involved in understanding
Expressive language refers to the skills of being precise, complete and clear when expressing thoughts and feelings, answering questions, relating events, and carrying on a conversation.