1
The chemical element of atomic number 13, a light silvery-grey metal.
2
A building material made from a mixture of broken stone or gravel, sand, cement, and water, which can be spread or poured into moulds and forms a mass resembling stone on hardening.
3
Pots and other articles made from clay hardened by heat.
4
A soft white material for spreading on walls, ceilings, or other structures, to form a smooth hard surface when dried.
5
A powdery substance made by calcining lime and clay, mixed with water to form mortar or mixed with sand, gravel, and water to make concrete.
6
A workable paste used to bind building blocks such as stones, bricks, and concrete masonry units, fill and seal the irregular gaps between them, and sometimes add decorative colors or patterns to masonry walls.
7
A hard, brittle substance, typically transparent or translucent, made by fusing sand with soda and lime and cooling rapidly. It is used to make windows, drinking containers, and other articles.
8
Hard solid non-metallic mineral matter of which rock is made, especially as a building material.
9
A small rectangular block typically made of fired or sun-dried clay, used in building.
10
A hard, strong grey or bluish-grey alloy of iron with carbon and usually other elements, used as a structural and fabricating material.
11
The hard fibrous material that forms the main substance of the trunk or branches of a tree or shrub, used for fuel or timber.
12
Soft, sticky matter resulting from the mixing of earth and water.
13
A dark, thick flammable liquid distilled from wood or coal, consisting of a mixture of hydrocarbons, resins, alcohols, and other compounds. It is used in road-making and for coating and preserving timber.
