Answer:
A person's greatest asset.
Nothing specific, but more than a few. This many clustered, together will do.
I am a king but also a common device of measure. What am I?
A big shiny black car nobody wants to be a passenger in.
Mountains will crumble and temples will fall, and no man can survive its endless call. What is it?
It's what light turns into in the night
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?