Qual è la differenza tra focus e concentrate ?Sentiti libero di rispondere con un esempio.

I thought I’d give you the definitions and examples so you could fully understand:
Focus - pay particular attention to
Concentrate - focus one’s attention or mental effort on a particular object or activity

Concentrate has more of a mental aspect than focus (if I’m making any sense). They are generally the same meaning. They are synonyms after all.

You can think of them as:
Concentrate - when you have to block out distractions from your surroundings and pay attention to what you are doing
Focus - pay attention at certain thing(s)

Examples:
Concentrate - I need to concentrate on reading this book.
Focus - In today’s class, we are going to focus on these topics.

As you can see, the ‘concentrate’ used here is by focusing mentally. The ‘focus’ is used as more of a ‘what to pay attention to’ word.