If we are talking about 'keywords' that are commonly used in electronic communications one may need to first understand the nature of modern electronic textual communications itself. For instance, if an employer were to ask for a resume to be submitted electronically and you wanted to include some 'keywords' included in your response, you would be demonstrating a rather sophisticated understanding of the process itself.
Employers often have their software refer to a database of their designated and/or desired keywords. The best place to start 'mining' for keywords would be in the Job Posting itself. Oftentimes they tell you exactly what they're looking for and you may get more hits by studying their work first. Software can auto-scan submitted resumes and will count and could also rank by 'keyword searching'. If your application matched the desired search result well your resume would 'rise' to the top, so to speak, meaning the HR Dept would look at your application first.
But did you notice that I just said
"HR Dept"? Because if you are using keywords for an online job application, another hint would be to spell out all acronyms. 'HR Dept' is okay but, '
HR Dept / Human Resources Department,' is better. You never know how the computer that rates your work will count stuff. It's also good to submit in multiple formats. Word is an industry standard these days but it won't hurt to include a .txt file or a .pdf file along side of your more formal MSWord document.
Here's an example of some 'keywords' (if I understand your request, that is):
KEYWORDS:
Help Desk, HR / Human Resources, Technical / Technician / Techie / Technical Expertise, Troubleshooter, Problem Solver, etc.
Even more sophisticated systems use synonym finders to pad their keywords. For example, if your keyword was, 'writing,' the engine may also find words such as 'documentation,' 'report' and 'proposal' --all terms that are close to the original word, 'writing.'
I hope this, my guess at your meaning, helps,
Cordially,
~Sparrow