Goku's Kamehameha vs Vegeta's Galick Gun
The Kamehameha Wave is one of the first energy beams shown in the Dragon Ball series. The Kamehameha Wave was first invented by Master Roshi. It took Master Roshi 50 years to master the Kamehameha Wave, while it only took one try for Goku to master it. There are many types of Kamehameha Waves, mostly made my Goku. Such as Big Bang Kamehameha, Final Kamehameha, or Super Kamehameha. The Kamekameha is merely a mispronounced version of Kamehameha used by Goten.
Goku firing a Super Kamehameha at Piccolo
SSJ4 Gogeta firing a Big Bang Kamehameha at Omega Shenron
SSJ4 Gogeta powering up a Big Bang Kamehameha
Vegito using a Final Kamehameha
Goten's Kamekameha