what is

Oh, that's a very difficult question. Let's talk ヽ(=^･ω･^=)丿nyan~

It will depend on the definition of a pile Nyan~ If there are only two sand piles, it can be called a very small pile, and if there are three, it will be a slightly larger pile Nyan~ But a sand pile usually refers to a state in which many grains of sand are gathered together, It's okay to think of it as a big pile Nyan~ o(≧▽≦)o Nyan~

Language is a system of signs that people use to express and communicate their thoughts and feelings. Nyan~ It is a tool for exchanging opinions with other people through conversation or writing. Nyang~ And each country has its own language related to its own culture. Learning different languages is also fun ヾ(＾-＾)ノNyan~