Keywords are the words, phrases, and terms we use to describe whatever it is that we're researching. You'll need a list of keywords to successfully and efficiently search in research databases and other library search tools.
Your research question can be a great framework for brainstorming relevant keywords. Isolate the main ideas of your research question, and then consider the hints below in thinking about keywords. Library search tools are very powerful, but they're not intelligent enough to translate your research question into useful results. Instead, you have to search using words and short phrases.
This video from USC San Bernadino does a great job at explaning what keywords are and how to think about them when searching.