cement 和 concrete 都是水泥的意思，但是含义用法等不完全相同。
1、含义
cement：
水泥;胶合剂;胶接剂;粘固粉
巩固;粘牢;（用水泥、胶等）粘结;在…上抹水泥
concrete：
具体的，有形的，实在的，实际的;固结成的，混凝土制的
混凝土;具体物;（图案式）有形诗;〔建〕钢筋混凝土
使凝固;用混凝土修筑;萃取
凝固;固结;变坚固;使用混凝土
2、变换形式
concrete：第三人称单数： concretes， 复数： concretes ，现在分词： concreting ，
过去式： concreted
cement：第三人称单数： cements ，现在分词： cementing， 过去式： cemented ，
过去分词： cemented
3、用法
concrete：
用作名词：混凝土 building material that is made by mixing together cement , sand, small stones and water
用作动词：用混凝土覆盖 to cover sth with concrete
cement：
用作名词：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
胶合剂；胶接剂；黏固剂 a soft substance that becomes hard when dry and is used for
sticking things together or filling in holes
共同利益联合起来的纽带，凝聚力
something that unites people in a common interest
用作动词：用水泥、胶等粘结，胶合 to join two things together using cement , glue, etc
加强，巩固（关系等） to make a relationship, an agreement, etc. stronger
4、英语释义
concrete：
① a strong hard building material composed of sand and gravel and cement and water
一种坚硬的建筑材料，由砂、砾石、水泥和水组成。
② form into a solid mass 形成固体
③ capable of being perceived by the senses 能够被感觉到的
④ formed by the coalescence of particles 由微粒聚结形成
cement：
① a specialized bony substance covering the root of a tooth
覆盖牙齿根部的一种特殊的骨质物质。
② something that hardens to act as adhesive material
变硬的东西，起粘合材料的作用
③a building material that is a powder made of a mixture of calcined limestone and clay
由煅烧石灰石和粘土混合制成的粉末状建筑材料。
④ bind or join with or as if with cement
用水泥粘合或接合
Concrte: 混凝土; 凝结物
混凝土(Concrete): 由胶凝材料(如水泥 Cement)、水和骨料等按适当比例配制，经混合搅拌，硬化成型的一种人工石材。本回答被提问者采纳
cement Alternative forms caement ，A powdered substance produced by firing (calcining) calcium carbonate (limestone) and clay that develops strong cohesive properties when mixed with water. The main ingredient of concrete。
这就是concrete,caement水泥的区别