Punk-=-To stand for what you believe, and to have thought about what you believe. To not care so much about what you look like that you spend hours getting dressed up (and yes, this includes extensive hair spiking and chain wearing). To realize that the majority of people going along with something does not make it right; to be willing to change what seems wrong.
Punk Rock-=-a type of rock-'n'-roll, reaching its peak in the late 1970s and characterized by loud, insistent music and abusive or violent protest lyrics, and whose performers and followers are distinguished by extremes of dress and socially defiant behavior. Also called punk.
Ska Punk-=-also known as 3rd wave ska, Ska core, is basically a combination of newschool punk rock and horns, 3rd wave ska isn't stuff like Save Ferris or oldscool blackjazz/ska bands, atleast that's how i define it. Ska punk is a fast melodic, catchy punk song complere with some or a lot of horns throughout the song. You can also identify it by it's unique quitar riff. (high pitched) Usualy in breaks. Some Ska punk bands are Less than jake, agenst all authority, The hippos, The chinkees, Suicide Machines, Mu330, Mighty Mighty Bosstones, Reel big fish, Goldfinger, and many others.