Tonight Super Moon

Why call it super moon not giant moon oh?? According to the phenomenal just say it look bigger than the normal day we saw because tonight it closer to earth than usual. Then it should be named Giant not Super right!! Why call it Super Moon leh? If super should be have some Super Power or something like that lah right!! But whatever is that lah..Super kah..Giant kah.. spent some time to SSLL the moon tonight got really that bigger as usual or not lah.