1. THE SUBSTANTIVES.

1.1. Gender
The use of the noun in English, in terms of gender, is simpler than in
Spanish since, with some exceptions, there are no differences between masculine and
female.

• For example:     is she your friend? Yes, and she also knows my friend Luis. 

                                   Who are your cousins? Mary and Sue. 

• Example.(excepcions): He is an actor.         

                                           She is an actress.                      
                                           I have a brother and a sister Boys and girls work together in this school.
1.2. Number
 For the formation of the plural we will add "s" to the singular.
Example:. chair-chairs, car-cars, computer-computers
Here are the exceptions to the main rule:

•  Nouns ending in "ch", "o", "s", "sh", "x", add "-es" to singular.

Example:  glass / glasses match / matches potato / potatoes/ dish / dishes box / boxes

• Nouns ending in a consonant plus "-y" change their ending "-Y" for "-ies".

Example: party-parties lady-ladies country-countries

• Finishes in vowel plus - "and" only add "-s".

Example: boy / boys day / days

• In addition, there are irregular plurals that do not follow the rules.

Example: life-lives man-men child-children woman-women
 About the number, we will say that the nouns can be ACCOUNTING OR UNCONTAINABLE. Accountants are those that have singular and plural:
Example: biscuit / biscuits apple / apples bottle / bottles

1.3. Genitive Saxon (The possessive case)
 In English, to indicate that something belongs or has been produced by someone, add "'s" (genitive Saxon) to the name of the possessor.
 Example: Peter's house. 
 The dog's bone.
 My brother's children.

In cases where the noun ends in "-s", for a practical matter of pronunciation, it will be enough to add the apostrophe behind the word.
 Example: James' bicycle 

It is not common to use the Saxon Genitive for objects, since "one thing" can not own "something else" In this case, the possessive is formed with the preposition "of".
Example: The leg of the table.