kara and kana

I bumped into those to words many times, but I yet couldn't understand exactly what do they mean and how to use them.
If I'm not mistaken kana is used as some sort of question signification when it's in the end of the sentence, right?

kara = from i.e. america kara=from USA, 9ji kara=from 9 o'clock
A little formal writing=yori, i.e. 9ji yori kaigi wo shimasu=we have a meeting from 9 o'clock.
A letter ending, i.e. chichi yori=from your father
Also after, i.e. shigoto ga owatte kara=after work
Or karano,i.e 9ji karano kaigi=the meeting starting at 9 o'clock.
america karano fune=a ship from USA
Note:no yorino, only karano.

kana has basically three usages.
1.wondering:
doushite sonnani kowai kana? I wonder why (s)he is so afraid?
2. self talking: sorosoro ikou kana. I should get going.
sushi tabeyou kana=I feel like sushi.
3. wishing:
dareka konai kana. I wish somebody would come.
hayaku kaeranai kana. I wish (s)he would come home early.
I hope the above helps a little.

Also,
~kara as in "dakara", "desukara", or (plain past tense) + ~kara indicates reason　or because
ex. 美味しいから、もっと食べたい。
"Because it's delicious, I want to eat more."

"kara" or 空 also means "empty"
ex. karaoke literally means "empty orchestra" and 空手 or karate of course we know is "open hand" or "weaponless fighting"

Informal version of saying "spicy" or 辛い（からい）
ex. カラッ！sometimes written in kanji like this "辛っ！"
(spoken with a short stop after 'kara')

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