What do we mean when we say "speech" and "language"?
Speech refers to the way we talk and form our words. You may hear it referred to as articulation, phonology, or motor speech.
Language refers to the vocabulary, grammar and social use of language. Other terms you may hear relating to language include; syntax, content, pragmatics, form and use.
Understanding Speech and Language Development and more information
What are Child Speech-Language Delays and Disorders? and more information
What are Adult Speech-Language Disorders? and more information