People use “cement” and “concrete” interchangeably, but they're not the same thing. One is an ingredient; the other is the finished material. Here's the difference in one read.
Cement is the binder
Cement (usually Portland cement) is a fine gray powder that acts as the glue. On its own it's just an ingredient — it makes up only about 10–15% of a concrete mix. Mixed with water it forms a paste that hardens and binds everything else together.
Concrete is the finished material
Concrete is cement + sand + gravel (aggregate) + water. The cement paste coats and locks the sand and stone into a rock-hard mass. When you pour a slab, driveway, or footing, you're pouring concrete — the cement is just one part of the recipe.
And mortar is a third thing
Mortar is cement + sand + water, with no large aggregate — it's the stuff between bricks and blocks. So: cement is the powder, mortar is cement+sand for bonding masonry, and concrete is the full mix you build slabs with.
Common questions
Is cement the same as concrete?
No. Cement is a powdered ingredient; concrete is the finished material made by mixing cement with sand, gravel, and water.
What is concrete made of?
Cement (about 10–15%), sand, gravel or crushed stone, and water. The cement paste binds the aggregate into a solid mass.
Can you use cement without aggregate?
Cement plus water alone is weak and shrinks badly. It needs sand and aggregate (concrete) or at least sand (mortar) to be useful.