Gaining Honor

The Honor System rewards players for participating in player vs. player combat. By defeating other players and achieving PvP objectives, players earn Honor Points which they can use to purchase a wide array of rewards. There are four sources of Honor:
Honorable Kills
Killing racial leaders
Achieving Battlegrounds objectives
Achieving World PvP objectives
Honorable Kills
You receive Honorable Kills for defeating enemy players in battle, provided they are within an acceptable level range of your character's level. Each Honorable Kill will net you a reward of Honor Points. The amount of Honor you receive scales similarly to receiving experience from a monster. There are several factors influencing the Honor value of such a kill:
Your victim's level: To receive honor, you must not significantly outlevel your opponent. The name of your opponent will display in colored text showing their level relative to yours, with the same grey to red scheme that applies to monsters. Killing a "grey" player gives no Honor, while a "red" player is substantially higher level that yours. To receive honor you should focus on players around your own level (green, yellow, and orange).
Your own level: The higher level you are, the more honor you receive for honorable kills of same-level opponents. A level 70 character killing another level 70 character gains more Honor than a level 40 character killing another level 40 character.
Solo or group: Members of a group or raid will share Honor gains from kills in the same way as XP. However, the raid penalty on XP does not apply to Honor. Lower level members will get a smaller portion of the Honor. The diminishing returns for honor kills on the same enemy still apply while in a group or raid. In addition, group members who are too far away from the site of the kill will not receive a cut of the honor, much like the similar rule for earning XP.
Contribution: You must contribute to the honorable kill to receive honor. Contribution includes damaging the enemy, but also includes crowd control, and healing those in battle with that enemy.
Being present: You need to be alive and in the proximity of the kill at the time of the kill to get your share of the Honor.