Idiom

And by the way, can you tell me what is the difference between "What is the meaning of "none of your business"?" and " What does " none of your business" mean?"?

Hello

'None of your business' is a rather abrupt (although it can be done jokingly) response to a question. It means 'I'm not going to tell you and you shouldn't have asked me that question!'It is accusing the questioner of being nosy, overstepping a boundary. Mind your own business is another version.

for example

'What do you weigh?' - 'None of your business.'

Thank you very much! It helps me a lot.

'What is the meaning of "none of your business?"' and 'What does "none of your business" mean?' are two different ways of saying the same thing - one using the noun "meaning" and the other using the verb "to mean".

I guess both can be used interchangeably. Can we?

'What were you talking to John about?'
'Mind your own business!' [or]
'It's none of your business'

As Nona says, the 2 are interchangable.

Thanks.