knowing something; knowing that something exists and is important; being interested in something an awareness of the importance of eating a healthy diet.

There is one meaning in OED's entry for the noun awareness. See 'Meaning & use' for definition, usage, and quotation evidence.

[not before noun] knowing or realizing something. As you're aware, this is not a new problem. As far as I'm aware, nobody has done anything about it.

noun [uncountable] knowledge and understanding of your own character counseling can help to achieve greater self-awareness.

noun /ˌself əˈweənəs/ /ˌself əˈwernəs/ [uncountable] knowledge and understanding of your own character.

1[not before noun] knowing or realizing something As you're aware, this is not a new problem. As far as I'm aware, no one has done anything about it.

The state of being fully conscious of pertinent stimuli and really experiencing a task or situation. Awareness requires the ability to totally focus ...

​having or showing knowledge and understanding of your own character. She was sufficiently self-aware to recognize the cause of her problems.

AWARENESS definition: 1. knowledge that something exists, or understanding of a situation or subject at the present time…. Learn more.