It has no mass! Matter is something that CANNOT! have two things at the same spot at the same time. Say you are sitting in a desk at school, no matter where someone else sits, (by you, on top of you, on the desk) they are still not taking up the same space as you are. Sound though, can travel everywhere making it difficult for it to take up only one spot at a time. :)
2. Hurry up! The parade will start in an hour and you are still getting ready!
3. Your fancy dress costume looks fantastic! Is this what you will wear tonight?
4. Sarah hasn't been to the carnival since she was a little girl.
5. Joshua never takes part in the town parade; he doesn't like wearing costumes
It means he will pretend to be mad, in order to plot his revenge and act upon it. "Antic" used to mean "madcap", "bizarre", which suits Hamlet because he doesn't want to be taken seriously until he proves to himself that Claudius is really his father's murderer, and Gertrude complicit.