Answer:
Die without me, never thank me. Walk right through me, never feel me. What am I?
What has words but never speaks?
I make a loud sound when I'm changing. When I do change I get bigger but weigh less. What am I?
If two's company and three's a crowd what are four and five?
Two in a whole and four in a pair. Six in a trio you see. Eight's a quartet but what you must get is the name that fits just one of me.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.