SOUND
Sound-type moves:
- Are super effective against: Water, Ice, Rock
- Are not very effective against: Electric, Bug
- Have no effect against: Ghost
Sound-type Pokemon:
- Resist: Ice, Rock, Electric
- Are weak to: Psychic, Dragon
- Have immunity to: Ghost
I approach "Sound" as vibrations; Pokemon able to tap into and use the projection of noise to their advantage to 'interrupt' the vibratory homeostasis in other Pokemon to stir discomfort and induce such effects as sleep, nausea (confusion), etc. Sound, I find, is conceptually similar to Psychic, as when something is "sound", it is in tune with the targeted subject. Pokemon who are able to warp this "tune" to their advantage, be it by howling, singing, or producing high-pitched frequencies, are able to cause a disarray in the balance of their foes.
Now, for the big WHY in relevance to the above statistics.
- Sound, I feel, is the polar opposite of ghosts, while sound is the ultimate physical existence, ghosts are the anti-physical existence, so neither of them should effect one another at all.
- Sound is super effective against water because it best travels through it (liquids) than it does other forms of matter.
- Sound isn't very effective against Electric because the super-speed electricity, in a metaphoric sense, "beats sound in a race" when it comes to vibrations. However, I feel that in some ways, Electricity is a form of Sound, and so Sound can resist it. Make sense?
- Sound isn't very effective against Bug because insects use high-frequency soundwaves to communicate with one another, and so they have an advantage when it comes to battling against those aligned with the basis of Sound.
- Sound is weak against Psychic, because meditation can tap into and understand the natural vibrations of existence, and so a Psychic Pokemon would have the potential to "control" a Sound Pokemon. They work against one another despite not being opposites.
- Sound is also weak to Dragon because the disruptive roar of a Dragon (which in my opinion is a bizarre type) is epic enough to damage the naturally flowing fabric of Sound.
And that's that!