* Cement is a chemical substance that hardens when it cures.
* Concrete is a building material made with cement, water, and coarse aggregate (rock).
* Mortar is a material used to secure and fill gaps between stacked block construction (i.e. masonry)
* Cement mortar is mortar made with cement, water, and fine aggregate.
* Grout is a material used to fill gaps between tiles.
* Cement grout is grout made with cement, water, and sand.
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