common ground
noun [ U ] uk/ˌkɒm.ən ˈɡraʊnd/ us/ˌkɑː.mən ˈɡraʊnd/
（兴趣、信仰或观点上的）共同点，一致之处，共同基础
shared interests, beliefs, or opinions between two people or groups of people who disagree about most other subjects
It seems increasingly unlikely that the two sides will find any common ground. 双方似乎越来越不可能找到共同点。