"Although the two terms Conceptual and Perceptual refer to cognitive processes, there are a number of differences between them. In order to comprehend different phenomenon of the society and the world at large, both processes are used. The term perceptual comes from perception. It involves the ability of an individual to be aware of his surrounding through the senses. Conceptual, on the other hand, comes from concepts or else abstract ideas. It is difficult to understand conceptual knowledge as it involves more abstract ideas, unlike perceptual knowledge that is very straightforward. Though there are proponents of both conceptual as well as perceptual cognition, there is an overwhelming majority of thinkers who say that we perceive things through our eyes before we can move forward to conceptual thinking. This highlights that the key differences between the two processes stem from perceptual knowledge relying on our senses, whereas conceptual knowledge is relying on our previous learning. This article attempts to provide an understanding of each term while emphasizing the differences between the two."
In NJT we currently associate Abstract with Conceptual and Concrete with Perceptual.