megami is composed of the kanjis 女 and 神: 女 which means woman and 神 which means god
others terms for god:
the kanji 天 means heaven or sky while 主 means master, lord or god.
上 means above or superior. 帝 on the other hand is also read as mikado which means emperor (of Japan).
I just watched Hercules (starring Lili Sobieski). The movie depicts the war between the god Zeus and the goddess Hera.