why there’s 3 ways to write the same word in Japanese?

Question

I’m vaguely aware there’s something like 3 alphabets kanji, hiragana, and katakana. I also read that katakana is used for foreign words, but for some words there is a way to use all 3 alphabets. I guess im more so wondering what would be the appropriate use for each, so F.E, mint. I found a kanji and katakana but also maybe hiragana way. 造幣局 ミント みんと

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Answer 1

People who ask this always forget English has two alphabets too.

Katakana is used for loan words.  

Hiragana is used for most Japanese words. 

Kanji is used for words borrowed from Chinese hundreds of years ago.