"Matching" refers to the process of finding or creating pairs or groups that have similar or complementary characteristics, qualities, or appearances. It involves identifying things that are similar or go together well. Full definition
I love the design, and the colour is perfect for matching with anything. (elegantduchess.com)
«There is reason to suspect that many of the qualitative problems in social and political science may turn out to be problems of matching in social communications» (NC 88). (religion-online.org)