cement 和 concrete 都是水泥的意思，但是含義用法等不完全相同。
1、含義
cement：
水泥;膠合劑;膠接劑;粘固粉
鞏固;粘牢;（用水泥、膠等）粘結;在…上抹水泥
concrete：
具體的，有形的，實在的，實際的;固結成的，混凝土制的
混凝土;具體物;（圖案式）有形詩;〔建〕鋼筋混凝土
使凝固;用混凝土修築;萃取
凝固;固結;變堅固;使用混凝土
2、變換形式
concrete：第三人稱單數： concretes， 復數： concretes ，現在分詞： concreting ，
過去式： concreted
cement：第三人稱單數： cements ，現在分詞： cementing， 過去式： cemented ，
過去分詞： cemented
3、用法
concrete：
用作名詞：混凝土 building material that is made by mixing together cement , sand, small stones and water?
用作動詞：用混凝土覆蓋?to cover sth with concrete
cement：
用作名詞：水泥?a grey powder made by burning clay and lime that sets hard when it is mixed with water. Cement is used in building to stick bricks together and to make very hard surfaces
膠合劑；膠接劑；黏固劑?a soft substance that becomes hard when dry and is used for
sticking things together or filling in holes
***同利益聯合起來的紐帶，凝聚力?
something that unites people in a common interest
用作動詞：用水泥、膠等粘結，膠合 to join two things together using cement , glue, etc
加強，鞏固（關系等） to make a relationship, an agreement, etc. stronger
4、英語釋義
concrete：
① a strong hard building material composed of sand and gravel and cement and water
壹種堅硬的建築材料，由砂、礫石、水泥和水組成。
② form into a solid mass?形成固體
③ capable of being perceived by the senses?能夠被感覺到的
④ formed by the coalescence of particles?由微粒聚結形成
cement：
① a specialized bony substance covering the root of a tooth
覆蓋牙齒根部的壹種特殊的骨質物質。
② something that hardens to act as adhesive material
變硬的東西，起粘合材料的作用
③a building material that is a powder made of a mixture of calcined limestone and clay
由煆燒石灰石和粘土混合制成的粉末狀建築材料。
④ bind or join with or as if with cement
用水泥粘合或接合