What is synonym for perception?

Main Entry:perceptionPart of Speech:nounDefinition:understanding, ideaSynonyms:acumen, apprehending, apprehension, approach, attention, attitude, awareness, big idea, brain wave, brainchild, conceit, concept, conception, consciousness, discernment, feeling, flash, grasp, image, impression, insight, intellection, judgment, knowledge, light, notion, observation, opinion, perspicacity, picture, plan, realizing, recognition, sagacity, sensation, sense, study, thought, viewpoint