How many categories of nouns in English, please?

I. English nouns can be divided into two categories:

1. Proper?noun:

It is the name of a specific certain person, place or institution. The first letter of a proper noun must be capitalized. For example: Newton Newton, San?Francisco San Francisco, Russia Russia, United?Nations United Nations.?

2. Common noun (?common?noun):

It is the name of a certain kind of person, thing, or some kind of substance or abstract concept. For example: lawyer lawyer, market market, computer computer, rice rice, magazine magazine, freedom freedom.

Two, English nouns can be divided into countable nouns (countable?nouns) and uncountable nouns (uncountable?nouns). Countable nouns are singular and plural. The plural form of most nouns consists of adding -s or -es to the singular form.

For example:?Farm - farms farms, bus?- buses bus*** cars, toys?- toys toys, 1library?- libraries libraries, potato- potatoes potatoes, leaf?-?leaves leaves.?

Expanded Information

Nouns, the rules for forming the plural form are as follows:

(1) The plural form of the vast majority of nouns is to add -x to the end of the noun. e.g.

bank?banks bank, house?houses houses , holiday?holidays holidays, as in field?fields fields.?

(2) Nouns ending in the letters s, sh, ch, x, and o add -es to the end of the question when they become plural. e.g.

Class--classes classes, box?--boxes boxes, brushes?--?brushes brushes, hero?--?heroes heroes. . But certain nouns ending in. nouns ending in . only add -s when they become plural. e.g. ?piano?--?pianos pianos, photo-?photos photos, radio?--?radios radios, memo?--?memos memos.?

(3) Nouns ending in the letters f or fe, change f or fe to v and add -es when they become plural. e.g.

leaf?--?leaves leaves, life-lives lives, shelf?--?shelves shelves, knife?--?knives knives. There are exceptions, such as roof?--?roofs roofs, chief-chiefs chiefs, handkerchief?handkerchiefs handkerchiefs handkerchiefs.?

(4) Nouns ending in the consonant letter + y become plural when the y becomes i and -es is added. e.g.

Baby-?babies babies, family-families families, laboratory-? laboratories laboratories, city-cities cities.

Some English nouns have irregular plural forms.

Man-?men men, woman?-?women women, child?-?children children, mouse?-?mice mice, ?foot-?feet feet; feet, tooth?-?teeth teeth, ox-oxen bulls, total datum-data data , phenomenon - phenomena phenomena, crisis?- crises crisis,?thesis - theses thesis, analysis - analyses analysis.?

There are also a few English nouns that have the same singular and plural forms such as:

sheep sheep, deer deer, fish fish, aircraft airplane, means means, works factory; writings, Chinese Chinese, Japanese Japanese.