[uncountable] (formal) the ability to understand the true nature of something synonym insight She showed great perception in her assessment of the family ...

There are 13 meanings listed in OED's entry for the noun perception, four of which are labelled obsolete. See 'Meaning & use' for definitions, usage, ...

to understand or think of somebody/something in a particular way synonym see. perceive somebody/something/yourself (as something) This discovery was ...

to notice or become aware of something perceive something I perceived a change in his behavior. perceive that... She perceived that all was not well.

a belief or opinion, often held by many people and based on how things seem. We have to change the public's perception that money is being wasted.

having or showing the ability to see or understand things quickly, especially things that are not obvious

perceptive · ​(approving) having or showing the ability to see or understand things quickly, especially things that are not obvious. a highly perceptive comment ...

It can refer to our experience of seeing, hearing, touching, tasting, and smelling objects and individuals around us.

[only before noun] (specialist) relating to the ability to perceive things or the process of perceiving.