*5 C1-level business words* 1. *Revenue* *Meaning:* The money a company earns from its business activities. *Example:* The company's revenue increased by 15% last year. 2. *Negotiate* *Meaning:* To discuss something in order to reach an agreement. *Example:* They are negotiating a new contract with the supplier. 3. *Strategy* *Meaning:* A detailed plan to achieve success or a goal. *Example:* Their marketing strategy focuses on social media. 4. *Efficient* *Meaning:* Doing something well without wasting time or resources. *Example:* She is very efficient at managing her team. 5. *Partnership* *Meaning:* A business relationship between two or more people or groups. *Example:* The company formed a partnership with a local distributor.