replacement
/rɪˈpleɪsmənt/noun
mass noun
1- the action or process of replacing someone or something替代, 更换; 复位：
the replacement of religion by poetry
以诗歌代替宗教
count noun a hip replacement.髋骨替换（手术）。
1.1
- a person or thing that takes the place of another接替者, 替代者; 替代物。