stablemate
/ˈsteɪblmeɪt/noun
1- a horse, especially a racehorse, from the same establishment as another同一团体的马（尤指赛马）。
1.1
- a person or product from the same organization or background as another同学; 同事; 同伴; 来自同一组织（或具有相同背景）的人（或产品）; 同类产品：
the Daily Mirror and its Scottish stablemate the Daily Record.
《每日镜报》及其苏格兰同类报纸《每日记报》。