poker hands wiki

In terms of ranking in poker, what do the four aces mean?

I looked it up on wiki and I couldn't find it, just stuff about full house and straight flushes. I'd really like to know though since it's been bothering me for a while.Is getting four aces the highest hand in poker?

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Rankings are as follows:

5 of a kind (wilds are necessary for this)
Royal Flush
Straight Flush
4 of a kind
Full House
Flush
Straight
3 of a kind
2 of a kind
highest card