Appearance (noun)

1. The way that something or someone looks, especially when seen for the first time.
2. The way that something or someone seems to be, especially when this is different from the reality.
3. An act of appearing or becoming visible.

Origin:

Middle english: from old french aparance, from latin apparentia, from apparere "appear".

Examples:

1. The dress she wore at the party was striking in its appearance.
2. He made a sudden appearance at the meeting.
3. The appearance of the new model caused a stir in the market.
4. The building's exterior gave the appearance of being grand and imposing.
5. Despite her calm appearance, she was really nervous inside.