stablemate
noun [ C ] uk/ˈsteɪ.bəl.meɪt/ us/ˈsteɪ.bəl.meɪt/
类似物；隶属同一机构的事物
something that is similar to something else or is part of the same organization as something else
the Daily News and its stablemate the Weekly News 《每日新闻》及其姊妹刊物《每周新闻》