The choice of words will depend on the job you are applying for too. For example, if you are going for an upper level management job, you will be expected to have a higher level of education and be able to use more complex phrasing. For example…
“I have extensive experience in…”
“My primary field of expertise is…”
In all CV’s, the words ‘initiative’, ‘responsible’, ‘teamwork’, and ‘punctual’ are words that a prospective employer will love. You need to communicate to them that you are the best employee ever.