adjective

existing in a material or physical form; not abstract. "concrete objects like stones" синонимы: solid, material, real, physical, tangible, touchable, tactile, palpable, visible, existing

noun

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. "slabs of concrete"

verb

1. cover (an area) with concrete. "the precious English countryside may soon be concreted over "
2. form (something) into a mass; solidify. "the juices of the plants are concreted upon the surface"