Concern, Be Concerned about

"Concern" is a noun that refers to a feeling of worry, interest, or unease about someone or something. It typically arises from a perception that there is a problem or potential issue that requires attention or consideration.

To "be concerned about" is an expression that means to have a state of worry or unease regarding a particular person, situation, or problem. It implies that someone feels troubled or anxious about something and is actively considering or taking action to address it. Being concerned about something often involves caring about the well-being, safety, or outcome of a situation or individual.