In the following examples, RPM (“Revolutions per minute”) refers to an autonomous number, which is why a singular verb is used. On the other hand, HNS (“hazardous and noxious substances”) is used to describe several things, which is why it takes a plural veneer. Some quantifiers can be used with both accounting and incalculable nouns: an accountable noun becomes plural by adding s to the end of the word. Of course, there are exceptions — an accounting name is a name that is usually used to refer to something that can be counted (for example. B a keyboard – a lot of keyboards), while an incalculable name is a name that is usually used to refer to something that cannot be counted (for example.B. The subject of a sentence must always correspond to the verb that describes its plot. .