Rank of Hands

In Texas Hold'em poker, players compare five card hands against each other to determine who wins. A player with a Royal Flush has a better hand than a player with a Full House, for example.
If two or more players are tied with the same hand rank then kicker is used to determined the winner. Below is a list of standard combinations ranked from best to worst.

Royal Flush	Five card sequence, from 10 to the Ace in the same suit. A royal flush is a combination of a flush and a straight ending in the Ace high card. So all the cards are of the same suit, consecutive and have the Ace high card.
Straight Flush	Any five card sequence in the same suit. A straight flush is a combination of a flush and a straight. So all the cards are of the same suit, and all are consecutive. Ranking between straights is determined by the value of the high end of the straight. A royal flush is a straight flush that has a high card value of an Ace.
Four of a Kind	All four cards of the same index. Four cards of the same value such as four jacks or four 7's represent the second strongest poker hand. This hand beats everything except a Straight Flush.
Full House	Three of a kind combined with a pair. A full house is a combination of three of a kind and a pair. Meaning all five of your cards are a part of a set of either two or three of the same card value (eg. three 7's and two Kings). The highest three of a kind creates the strongest full house. In scenarios where players have the same three of a kind, the highest pair is then consulted to determine the winner.
Flush	Any five cards of the same suit, but not in sequence. A flush is a hand where all of the cards are the same suit, if each card you have is all one suit, such as 3 of Clubs, 5 of Clubs, 6 of Clubs, 8 of Clubs and King of Clubs, then you have a Flush. Don't be tricked into thinking that all five cards are the same color. The high card determines the winner if two people have a flush.
Straight	Five cards in sequence, but not in the same suit. A straight is a hand where all of the cards are consecutive. There is no continuative quality to this poker hand a straight cannot wrap around meaning it is not a straight if you have a Queen, King, Ace, Two or Three. Standard poker rules state that in the case of more than one straight, the higher straight wins, In case of straights that tie, the pot is split.
Three of a Kind	Three cards of the same value. Any three cards with the same value (eg. a 6 of Clubs, a 6 of Spades or a 6 of Diamonds) is considered to be three of a kind. The highest set of three cards wins.
Two-pair	Two separate pairs.Two sets of two cards of equal value constitute a hand that has two pairs. As usual the pair with the higher value is used to determine the winner of a tie.
Pair	One pair of two equal value cards constitutes a pair.
High-card	When the hand you are left with has none from the described above combinations then it's relative value is determined by the highest value card. If the highest cards are a tie then the tie is broken by the second highest card and etc. Suits are not used to break ties.

Kicker

A kicker is a high card that is part of the five-card poker hand, but is not used in determining a hand's rank (eg. in the hands AAAKQ vs AAAQT the king is the kicker; player with AAAKQ is the winner).