Meaning of interest in English
1. the feeling of wanting to know or to do
He began to take an interest in biology.
2. something that causes such curiosity
Music is of no interest to me. ― I'm not interested in music.
3. the advantage or benefit of people, nations etc.
Both countries are valuable countries to our national interests.
4. the extra money that you must pay back if you have borrowed money, or the extra money that you receive when you keep money in an account in a bank or financial institution
borrow money without[free of] interest ー borrow money interest-free
5. profit