Origin: Germanic Old English suffix
Awareness has 3 different meanings across 1 category:
having knowledge of
"he had no awareness of his mistakes"
"his sudden consciousness of the problem he faced"
"their intelligence and general knowingness was impressive"
The state or level of consciousness where sense data can be confirmed by an observer.
"After years of coma, doctors finally registered a flicker of awareness when he blinked at the sound of his daughter's voice."
In plain English: Awareness is knowing that something exists or happening around you.
"Public awareness about recycling has grown significantly in recent years."
Usage: Use awareness to describe the conscious perception or knowledge of something, such as being aware of a change in temperature. Avoid using it to refer to the physical act of seeing or hearing, as that relates more directly to sensory input rather than the state of knowing.
The word awareness comes from combining the adjective aware with the suffix -ness. It originally meant the state or quality of being aware.