Using the correct words to search will help you find relevant information.
Different authors and search tools use different words to describe the same concepts, so it is useful to have a list of similar and related terms in your arsenal when you set out to search for relevant information.
The process of creating these alternative terms is called brainstorming terms or concept mapping. The University of Illinois Undergraduate Library illustrates this process well in their brief video called, Developing Your Topic with a Concept Map.
From University of Illinois at Urbana–Champaign