Answer:
I stand in one place yet I fill a whole room. I can be filled with molten rock and come in every hue.
I give people a huge fright but at the end I'm sweet. I normally celebrate at night when there's less heat.
To cross the water I'm the way. For water I'm above I touch it not and truth to say I neither swim nor move.
I hold two meanings. With one I may be broken with the other I hold on.
An action done on mosquito bites
What is always coming but never arrives?