On the basic wordpress.com dashboard, I can see the search keywords people used to get here. I'll try to post the answers, if I can. Even though people might not bother coming back, it's good practice for me. Yesterday, for example:
"Japanese word for night" - that's easy. 夜-Yoru. Late at night is usually "深夜"-Shinya.
The next one was not so easy:
"Every Japanese word and what they mean"
Might I suggest Jim Breen's online Dictionary. Sounds like someone has a very demanding teacher.