Speech Delay vs. Language Delay: What Is the Difference?
A plain-language guide to speech sounds, understanding and expressive language.
Published by Langley Speech Therapy Inc. • Updated September 12, 2026
Speech and language are related but different
Speech is the production of sounds and words. Language is the system we use to understand and share meaning through words, sentences, gestures, signs, pictures or an AAC device. A child may have difficulty in one area or both.
A speech sound example
A child may know exactly what they want to say and use age-appropriate sentences, but unfamiliar people struggle to understand the sounds. This can point toward a speech sound concern.
A language example
Another child may pronounce sounds clearly but use short sentences, have difficulty learning new words or struggle to follow directions. This can point toward receptive or expressive language needs.
Why assessment matters
Different patterns need different supports. A speech-language pathologist looks at the whole communication profile and chooses goals based on function, development and family priorities.
Sources & further reading
Communication Health Support Association / ASHA: speech and language. This independent patient-education resource provides background on the topics in this guide; it does not endorse this practice.
Published by Langley Speech Therapy Inc. • Updated September 12, 2026. This general guide is not a documented clinician-reviewed assessment or a diagnosis. Ask your treating speech-language pathologist how this information applies to your child.
Important note
This article is general education and does not replace an individualized assessment, diagnosis or medical advice.