Using the right keywords in your CV / résumé is very important. There are two good reasons for that. Firstly, they are crucial for finding your document using all kinds of search engines. Secondly, the more your wording matches the one of the job vacancies you are interested in, the stronger your CV / résumé will come across as a fit.
Here are two good tools that can help you do the necessary research to optimize the keywords in your CV / résumé, cover letters, and other related application documents: