Answer:
Hot tempered and sometimes it blows its top, making a mess of everything.
What kind of nail can be grown?
Sitting down you have it, Standing up you don't.
What is broken if you say its name?
I am neither a guest nor a trespasser in this place. I belong that belongs to me. Where is it?
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.