pluralization
🇺🇸
/ˌplʊrələˈzeɪʃn/
🇬🇧
/ˌplʊərəlaɪˈzeɪʃn/
the process of changing a word to show more than one of something
The pluralization of 'cat' is 'cats'.
'cat'の複数形は'cats'です。