concrete

nouns

a strong hard building material composed of sand and gravel and cement and water
is a type of (narrower)
material used for constructing buildings
is a type of (narrower)
material used to pave an area

verbs

cover with cement
"concrete the walls"
is a type of (narrower)
provide with a covering or cause to be covered
"cover her face with a handkerchief"; "cover the child with a blanket"; "cover the grave with flowers"
form into a solid mass; coalesce
is derived from
is derived from
is a type of (narrower)
make solid or more solid; cause to solidify

adjectives

capable of being perceived by the senses; not abstract or imaginary
"concrete objects such as trees"
is derived from
antonym
is similar to
belonging to immediate experience of actual things or events
"objective benefits"; "an objective example"; "there is no objective evidence of anything of the kind"
is similar to
capable of being treated as fact
"tangible evidence"; "his brief time as Prime Minister brought few real benefits to the poor"
see also
concerned with actual use or practice
"he is a very practical person"; "the idea had no practical application"; "a practical knowledge of Japanese"; "woodworking is a practical art"
see also
being or occurring in fact or actuality; having verified existence; not illusory
"real objects"; "real people; not ghosts"; "a film based on real life"; "a real illness"; "real humility"; "Life is real! Life is earnest!"- Longfellow
see also
perceptible by the senses especially the sense of touch
"skin with a tangible roughness"
is an attribute of
the quality of being concrete (not abstract)
formed by the coalescence of particles
is similar to
of definite shape and volume; firm; neither liquid nor gaseous
"ice is water in the solid state"