"core keywords" refers to the most important words or phrases that are essential to understanding a certain topic or subject. They represent the main ideas or key concepts related to that topic. Full definition
This shows the importance that core keywords for the jobs you would like to be considered for, are in your resume. (cvtips.com)
If they are unwilling, at least ask for an accounting of their number of current clients that will be targeting the same core keywords. (lawyerist.com)
It means an even lower focus on short, core keywords, and a higher focus on long - tail keywords and on conversational, colloquial types of searches. (entrepreneur.com)