Hi, check it. http://dictionary.cambridge.org/ and it https://www.quora.com/What-is-the-difference-between-college-institute-and-university-and-school

Thanks! It helps a lot.

An academy is usually a place where you would go to train or learn something specific such as police training or dance. An institution is pretty much the same thing. In the UK, college is usually for students aged 16-18 or 17-19 where they would study a 2 year, level 3 diploma. University in the UK is where students go from age 18+ for a 3 or 4 year degree. In the US, college and university mean the same thing (3 year degree from age 18+). They stay in high school until they are 18 years of age unlike the UK, where students leave at 16 and can choose to study further or go straight into a job. Good luck with your learning! :)