In order to communicate, we must learn to use language on all levels. But first, it's important to understand what is meant by abstract and concrete language and also general and specific language.
Abstract words refer to intangible qualities, ideas, and concepts.
Concrete words refer to tangible, qualities or characteristics, things we know through our senses. So, we conceive the abstract though our mental processes and perceive the concrete through our five senses. Cooper observed the large majority of all phenomena with conspicuous nonsuccess in apprehending the nature of reality. Cooper saw nearly all things as through a glass eye, darkly. General words refer to large classes and broad areas.