Student or Learner
-Can we say "oh, that's a man's thing"? Could we also say "oh, that's a manthing?
-Can we say "In Nike's example, we see that it's easy to make cheap shoes (this is just an example!!). Could we also say "In Nikeexample...?
-If we are talking about the copy of a painting , could we say "Its aspect is as good as the original's aspect?"
Thank you very much
You can't just combine any two words into a compound word. This isn't German.
Neither "man thing" nor "Nike example" should be combined.
You could use "Nike's example" or "the Nike example," but the first is probably clearer for a first reference to the idea.
You sentence about a painting is OK, but you do not need to say "aspect" twice. It's not wrong, just not necessary.
and we say "that's a man's thing", right?
Man thing is fine, as two words. Some may claim "man" is not an adjective, but it is understandable.