This topic sounded like something simple to achieve (not necessarily well) so I decided to do some reading, which I'm pleased (!!) to say blurred the lines on the subject even more!!!!!!
I found the quotes below, but the qualification is up for debate,
"Objective abstract art will present a recognizable subject in an unusual way. Non-objective abstract art will present lines, form and colors full of light and energy that flow from an non recognizable subject"(John Womack)â€œtry to isolate the essence of the subjectâ€