no good

[bread]

It's no good.
It's not good.

Is there actually any difference?

What does "what are u up to" mean?

Thank you in advance. :o

[Casiopea]

It's no good.
It's not good.

Is there actually any difference?

What does "what are u up to" mean?

Thank you in advance. :o

It is no good ~ It doesn't work ~ It's useless; You can't use it; It's ineffective.

It is not good ~ It's bad.

The food is not good. (The food is bad/not good to eat)
The food is no good. (The food has spoiled)

What are you up to (right now/these days)?
=> What are you doing right now; What have you been doing lately? :D