exterior
When used as an adjective, "exterior" typically describes the physical outside of a structure or object. It is more formal than the word "outside." When used as a noun to describe a person's behavior, it often suggests a contrast between how someone looks on the surface and how they actually feel inside.
💬Casual Conversation
🎬Tuesday afternoon in a shared office, Jessica is staring at a construction site across the street.
Jessica
The client's flipping out because the exterior isn't finished. Where are you?
Mark
Chilling at lunch. I'll touch base with the crew in a bit.
💡
Jessica is panicked about a project deadline (the building's outside surface), while Mark uses 'flipping out' (becoming very upset) and 'touch base' (briefly contact/update) to maintain his casual, slacker demeanor despite the urgency.