Definition:
"Waking up" is a noun that refers to the act of becoming awake after sleeping. It is the moment when you stop sleeping and start being aware of your surroundings.
In more advanced contexts, you might talk about the concept of "waking up" in terms of awareness or realization. For example, someone might say they are "waking up" to social issues, meaning they are becoming more aware of them.
"Waking up" can also refer to becoming more aware of something, not just in the context of sleep. For example, "waking up to reality" means realizing the truth about a situation.
"Waking up" is a simple yet versatile term that can describe both the physical act of getting out of sleep and the metaphorical act of becoming aware.