15 / 10 / 2021
existing in a material or physical form; not abstract for example your head is concrete but Your mind is abstract .
Abstract thinking is the ability to understand concepts that are real, such as freedom or vulnerability, but which are not directly tied to concrete physical objects and experiences. Abstract thinking is the ability to absorb information from our senses and make connections to the wider world.
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.
(Durability not recycling!)