[{"Bold_text": "noun", "List Items": ["an artificial, stonelike material used for various structural purposes, made by mixing cement and various aggregates, as sand, pebbles, gravel, or shale, with water and allowing the mixture to harden.Compare reinforced concrete reinforced concrete.", "any of various artificial building or paving materials, as those containing tar.", "an idea, observation, term, or word having an actual or existent thing or instance as its referent, as opposed to its being abstract:Psychology is all about feelings and behavior, but I’m interested in the concrete—and that’s why I became a surgeon.", "a mass formed by coalescence or concretion particles of matter."]}, {"Bold_text": "adjective", "List Items": ["constituting an actual thing or instance; real:concrete proof of his sincerity.Synonyms: substantial , factual , solid Antonyms: abstract", "relating to or concerned with realities or actual instances rather than abstractions; particular ( general ):concrete ideas.Antonyms: abstract", "representing or applied to an actual substance or thing, as opposed to an abstract quality:The words “cat,” “water,” and “teacher” are concrete, whereas the words “truth,” “excellence,” and “adulthood” are abstract.", "made of concrete:a concrete pavement;concrete lawn ornaments.", "formed by coalescence of separate particles into a mass; united in a coagulated, condensed, or solid mass or state."]}, {"Bold_text": "verb (used with object)", "List Items": ["to treat or lay with concrete:to concrete a sidewalk.", "to form into a mass by coalescence of particles; render solid:Of these two semiliquid solutions, which one do you think can be more easily concreted?", "to make real, tangible, or particular."]}, {"Bold_text": "verb (used without object)", "List Items": ["to coalesce into a mass; become solid; harden:Has it started to concrete?", "to use or apply concrete:We can’t begin concreting until all the forms have been installed."]}]