A noun is an abstract noun either based on its definition or based on the context in which it is used.
Most English nouns originated in ancient languages of the region and languages of other countries as people invaded and migrated. Other nouns are created as they're needed, new nouns, like 'refrigerator', 'television' or 'internet'.
Most nouns form their plurals by simply adding sto the end of the word.
Answer
In English, most plurals of nouns by adding S. Examples are:
Rat (singular)
Rats (plural)
Table (singular)
Tables (plural)
Vacation (singular)
Vacations (plural)
Actually, it's the other way around-- many nouns can be turned into adjectives. (A noun is a person, a place, or a thing; an adjective describes or tells us more about the noun.) So an athlete is a person who plays sports. We can describe that person as athletic. Or take the noun medicine, referring to what the doctor gives you when you are sick. You can say: Many people believe that soy has medicinal properties. A student is a noun, referring to someone who attends school and studies there. But we could describe that person as studious, meaning someone who applies himself or herself to their studies.
But please keep in mind that not every noun can be turned into an adjective. Some nouns have no adjectival form at all.
Sheriff and gulf are different singular nouns, so it stands to reason that they would be different plural nouns. If you're asking why their plurals are formed differently, they aren't.
The possessive of all English plural nouns ending in s is formed by adding an apostrophe: uncles'.
The plural form for the name Amos is Amoses.
Most nouns that end in 'i' form the plural by adding 's'. For example:rabbi > rabbiskhaki > khakisalibi > alibisHowever, there are exceptions where the plural can be formed by adding either 's' or 'es'. For example:taxi > taxis > taxiesalkali > alkalis > alkalieschili > chilies
The possessive of all English plural nouns ending in -s is formed by adding an apostrophe: Toms'
Regular plural nouns are formed by adding -s or -es to the end of the word.
Most plural nouns are formed by adding an 's', an 'es', or changing the last letter to 'ies'. Nouns that don't conform to this rule are called irregular nouns and use a change in spelling the word to form the plural or don't change at all to be used as plural. Some example of some irregular plural nouns are: one man to the plural men one foot to the plural feet one mouse to the plural mice one cactus to the plural cacti one goose to the plural geese one oasis to the plural oases one beau to the plural beaux one sheep to the plural sheep
Most plural nouns are formed by adding an 's', an 'es', or changing the last letter to 'ies'. Nouns that don't conform to this rule are called irregular nouns and use a change in spelling the word to form the plural or don't change at all to be used as plural. Some example of some irregular plural nouns are: one man to the plural men one foot to the plural feet one mouse to the plural mice one cactus to the plural cacti one goose to the plural geese one oasis to the plural oases one beau to the plural beaux one sheep to the plural sheep
Sheriff and gulf are different singular nouns, so it stands to reason that they would be different plural nouns. If you're asking why their plurals are formed differently, they aren't.
A noun must be pluralized before its possessive can be formed because the different endings of plural nouns determines how to form the possessive. The same is true for compound nouns, which form the plural in different ways.Singular possessives are formed by adding an apostrophe s to the end of a noun; for example:apple; apple's coreboy; boy's bicycleclass; class's homeworkDover; Dover's mayorFor plural nouns that end in -s, the possessive are formed by adding an apostrophe after the existing -s; for irregular plural nouns that don't end with -s, the possessive is formed by adding the apostrophe s the same as a singular noun.This is when you need to know how the plural form ends in order to form the plural possessive; for example:the plural noun apples ends with an s, so the possessive is formed by just adding an apostrophe after the existing s: apples' coresbut the plural form for the noun child is children, which does not end with an s; plural nouns that do not end with s are made possessive the same as singular nouns; children'splaygroundplural nouns that do not end with s are called irregular plurals; some other examples of irregular plural possessive nouns are (mouse) mice's tracks or (man) men's shoesCompound nouns can also have different plural forms and must be made plural before determining how its plural possessive is formed; for example:the plural form for the the regular compound noun bedroom is bedrooms, the plural possessive is: bedrooms' doorsthe plural form for the compound noun paint brush is paint brushes, the plural possessive is: paint brushes'bristlesexamples of irregular plural compound nouns are: businessman, the plural is businessmen, the plural possessive is: businessmen's luncheonmother-in-law, the plural is mothers-in-law, the plural possessive is: mothers-in-law's opinionspasserby, the plural is passersby, the plural possessive is: The passersby's attention was drawn by our new sign.
Try writing this question in English. Most plural nouns do end in s. Perhaps you mean that you want a list of nouns that end in s but are not plural.
The possessive of all English plural nouns ending in -s is formed by adding an apostrophe: knives'
The possessive of all English plural nouns NOT ending in s is formed by adding 's: men's
The possessive of all English plural nouns not ending in -s is formed by adding -'s: oxen's
The plural of bus is buses, and the possessive of all English plural nouns ending in -s is formed by adding an apostrophe: buses'
All nouns used to show possession use an apostrophe.Singular possessives are formed by adding an apostrophe s ('s) to the end of a noun.For plural nouns that end in -s, the possessive are formed by adding an apostrophe after the existing -s ('); for irregular plural nouns that don't end with -s, the possessive is formed by adding the apostrophe s ('s), the same as a singular noun.
Most common nouns can have plurals, even if the plural is the same as the singular. Other nouns are uncountable, such as the abstract nouns need, greed, or poverty.