Reading Theme:
Concrete: Definition, Usage & Common Mistakes (2 meaning)
Meaning 1：specific and tangible (concrete)
concrete
/ˈkɒŋkriːt/
adj., n.
Something that is clear, definite, and based on facts or real things, not just ideas.
specific and tangible
➕
/spɪˈsɪfɪk ænd ˈtændʒəbl/
adj., n.
Referring to something that is not abstract or theoretical, but rather based on real facts, physical existence, or definite details.
📘 Details & Usage
📖 Root Explanation
From Latin 'concretus', meaning 'grown together, hardened' (com- 'together' + crescere 'to grow').
💡 Mnemonic
Think of a concrete sidewalk — it's solid, real, and definitely not just an idea.
📖 Example
We need a concrete plan for the project, not just general ideas.
We require a plan based on specific and actionable steps, rather than vague notions.
🔗 Collocations
concrete evidence – proof that is solid, physical, or irrefutable
concrete steps – definite, specific actions to be taken
a concrete example – a specific, real-world instance used for illustration
🔄 Synonyms
🚫 Antonyms
abstract (adj.) – existing in thought or as an idea but not having a physical reality
vague (adj.) – of uncertain or indefinite character
theoretical (adj.) – concerned with the theory rather than practical application
🌱 Derivatives
concretely (adv.) – in a real, definite, or tangible way
📖 Cultural Story
The term entered English in the 14th century describing physical matter. Its abstract meaning ('specific, real') emerged in the 17th century, reflecting a shift from tangible 'grown-together' material to solid, definite ideas. Today, 'concrete' is crucial in project management, emphasizing actionable details over vague concepts.
Meaning 2：building material (concrete)
concrete
/ˈkɒŋkriːt/
adj., n.
A very hard building material made by mixing cement, sand, small stones, and water.
building material
➕
/ˈbɪldɪŋ məˈtɪəriəl/
adj., n.
A heavy, solid material used in construction, made by mixing cement, sand, aggregate (like gravel), and water, which hardens as it dries.
📘 Details & Usage
📖 Example
The bridge is supported by massive concrete pillars that go deep into the riverbed.
The bridge's support comes from enormous pillars made of the hardened construction material, extending far down into the riverbed.
🔗 Collocations
reinforced concrete – concrete strengthened with embedded steel bars or mesh
poured concrete – concrete that is placed into a mold or formwork while still wet
concrete slab – a flat, thick piece of concrete used for floors, foundations, or pavements
🔄 Synonyms
cement (n.) – a powder that is a key binding component of concrete
🌱 Derivatives
concrete (v.) – to cover with or embed in concrete
Wordbook
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