Conceptional and Nonrepresentational

Conceptional adjective - Being of the nature of a notion or concept.

Nonrepresentational and conceptional are semantically related. In some cases you can use "Nonrepresentational" instead an adjective "Conceptional".

Nonrepresentational adjective - Using elements of form (as color, line, or texture) with little or no attempt at creating a realistic picture.

Conceptional and nonrepresentational are semantically related. Sometimes you can use "Conceptional" instead an adjective "Nonrepresentational".