A common noun can be made plural by adding an 's', 'es', 'ies', 'ves'; by changing 'us' to 'i', 'is' to 'es', 'on' to 'a' and so on. There are some common nouns ...
2023年4月14日 — A plural noun is a noun that refers to more than one of something (as opposed to a singular noun, which refers to just one). Like singular nouns ...
In English, the most common formation of plural nouns is by adding an -s suffix to the singular noun. (For details and different cases, see English plurals).