Adverb
Usually written in kana
1.  again;  once more;  once again;  another time;  some other time
2.  also;  too;  as well;  likewise
3.  on the other hand;  while
Conjunction
Usually written in kana
4.  and;  in addition;  besides;  moreover;  furthermore
5.  or;  otherwise
Adverb
Usually written in kana
6.  really;  how;  (what, why) on earth
expresses surprise, shock, doubt, etc.
7.  indirect