Japanese is both singular and plural, though if you're worried about ambiguity, you can simply use "Japanese person" and "Japanese people."
No. It is a proper adjective for people or things from Japan. It is also used as a noun, but almost always as a plural noun, for Japanese people. (Group noun "the Japanese" and not usually "a Japanese" as with the term "a German.")
The Plural for Japanese is "Japanese". It;s like sheep. Look at the sheep. Same with Japanese. Look at all of the Japanese coming off the plane
Shinkansen is used both as a singular and a plural in Japanese.
As spelled, the plural noun "tankas" refers to Japanese poetry forms. The other possibilities: tankers - (plural noun) fuel vehicles thankers - (plural noun) people expressing gratitude
The noun Japanese is a uncountable noun for the language of Japan. The noun form Japanese is both singular or plural for a person or people of Japan. The word Japanese is also a proper adjective to describe a noun as of Japan.
The plural of koi, a Japanese karp, is koi.
hero or heroes* = 英雄 (eiyū)*Japanese doesn't have plural forms for most nouns.
"Japanese" is an adjective, and so it has no plural form. While some national adjectives may be used as nouns having a plural form - we may say Germans and Italians and Bengalis, for example - national adjectives in -ese are not among them. Use the periphrastic, originally French possessive form: of the Japanese.
It is commonly accepted in English to use the word 'tsunamis' as the plural because it has been incorporated into the English language. Even though it originated in Japan, it has been adopted in various other languages. Language purists will argue that there is no plural because there is not a Japanese plural for the word, but it is no longer strictly a Japanese word.
Yes, the word people is plural noun; people is the plural form for the noun person.
The plural form is crowds of people.
If you're using persons as the plural of person, then the plural possessive of persons is persons'.If you're using people as the plural of person, then the plural possessive is people's.(People meaning ethnic groups can have a plural peoples.)