What is the plural of that is a bianck knife

What is the plural of that is a bianck knife


Those are black knives.



The complex number of knife


For example, leaf becomes leaves, thief becomes things, and life becomes lives



Which word is plural, Japanese or Japanese


Japanese is both singular and plural. It is a word with the same form of singular and plural. Some words ending with ese that indicate the country or the people of which country are also with the same form of singular and plural, such as Chinese