Anxious is used to describe a feeling of worry. It happens when someone is concerned about what might happen.
She was anxious about the test.
I feel anxious before big events.
In this sense, anxious refers to a strong desire to achieve something. It's about being excited and ready.
They were anxious to start the project.
She is anxious to learn new things.
In psychology, anxiety refers to a more serious feeling that can affect daily life. It is often tied to mental health issues.
He felt anxious every day at work.
Anxious thoughts can affect sleep.