Perception
Part of speech: noun
Definition: Conscious understanding of something. Vision (ability) Acuity (cognition) That which is detected by the five senses; not necessarily understood (imagine looking through fog, trying to understand if you see a small dog or a cat); also that which is detected within consciousness as a thought, intuition, deduction, etc.
Conception
Part of speech: noun
Definition: The act of conceiving.The state of being conceived; the beginning.The fertilization of a human ovum by a sperm to form a zygote.The start of pregnancy.The formation of a conceptus or an implanted embryo.The power or faculty of apprehending of forming an idea in the mind; the power of recalling a past sensation or perception; the ability to form mental abstractions.An image, idea, or notion formed in the mind; a concept, plan or design.