office
"Office" is a common English word with a few distinct meanings. Most often you'll hear it referring to a place where people work, but it can also mean a position of authority or power. Here are the most useful senses.
This is the most common meaning. An office is a place — a room or a whole building — where people do professional or administrative work, usually at desks with computers. Think of it as the opposite of a factory or a shop: it's where the 'paper work' (or digital work) happens.
everyday language, business · Modern, widely used
An office can also mean an important official role or position, especially in government or an organisation. When someone holds an 'office', they have been given power and responsibility. You'll often see this in phrases like 'take office' (start the role) or 'leave office' (end the role).
politics, formal language · Modern, widely used
Especially in American English, the private room where a doctor, lawyer, or other professional meets clients is called their 'office'. In British English, you might hear 'surgery' for a doctor, but 'office' is very common globally.
healthcare, professional services · Modern, widely used — especially in American English