This meaning implies a sense of awareness or consideration regarding a subject or situation. It is often used when someone has an idea or thought about something.

This usage refers to being aware of a particular fact or piece of information. It indicates a situation where someone knows about something, usually through experience or familiarity.

Here, it suggests having a thought or conception about something, often in a more abstract sense. This meaning is used when referring to a concept or a plan that someone is considering.