What are HM and TM moves?

Question

Like, sometimes when they're showing moves in pokemon, they say TM or HM moves or something like that.

Answer 1

Yes, some moves are HM and TM

TM - Technical Machine
It's a CD - like item that teaches Pokémon a move, that may not normally learn, or learn at much highter levels. Each generation brought new TMs. But There is no Pokémon that can learn all TM moves (Arceus maybe). Some can learn many Tms, but no all. Disappears after use(this was changed in B/W so now TMs do not break).

HM - Hidden Machine
Like TMs, these are CD like items, teaching moves. Only some Pokémon may learn some of these moves by itself. E.g., HM03 Surf is a powerful special water attack. But may be also used to cross water. All HM moves are having both battle effect and overworld effect. But unlike TMs, HM CDs may be used any number of times.

Comments

Arceus can learn all HMs and most TMs but mew can learn all or both.

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Acually, Mew can learn all TMs and HMs

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yes he can,mew learns evrythin