yeah that's exactly what i meant, like you keep the word but if you add another to it, it can change it's meaning completely. I can't give an example, the books were borrowed from libraries and such so i can't look any up
ありがとう

過去　（かこ）　= Past

現在　（げんざい） = Present

未来　（みらい） = Future

I've always liked this for some reason :

生年月日 (seinengappi - date of birth)

Is quite logical

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初恋　（はつこい） = First love

失恋　（しつれん） = Disappointed Love

The kanji what I like most is "KANJI"! haha~~

漢字

In Japanese ,almost all kanji are come from China, some of them are created by Japanese.

there are many meanings of "漢"----peoples of China, man, one of the dynasty in Chinese history called "漢", a river called "漢水". and we read it "Han" in Chinese.:D :D

Actually it is "hadaka".

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Wow. Why would you say that?

Yup...

火星 - かせい
This compound means Mars, the planet. It is a compound of the characters fire, 火, and star, 星.