Concrete block
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A concrete block, also known as a cinder block in North American English, breeze block in British English, concrete masonry unit (CMU), or by various other terms, is a standard-size rectangular block used in building construction. The use of blockwork allows structures to be built in the traditional masonry style with layers of staggered blocks.
A pallet of "8-inch" concrete blocks
An interior wall of painted concrete blocks
Concrete masonry blocks
A building constructed with concrete masonry blocks
Masonry
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Masonry is the craft of building a structure with brick, stone, or similar material, including mortar plastering which are often laid in, bound and pasted together by mortar. The term masonry can also refer to the building units themselves.
A mason laying a brick on top of the mortar
Bridge over the Isábena river in the Monastery of Santa María de Obarra, masonry construction with stones
Dry set masonry supports a rustic log bridge, where it provides a well-drained support for the log (which will lengthen its service life).
Stone masonry