aware 

"She is aware of the importance of time management."  

"I became aware that I had left my phone at home after I arrived at the office." 

"The company's employees should be aware of the new policies  

Unaware:

"He was unaware of the changes in the school timetable. 

"She remained unaware that her phone had been ringing." 

Awareness

"Environmental awareness is growing as people become more conscious of climate change."  

"The awareness of the importance of mental health is spreading in society."