Pluralization:
* Cats: Adds an "s" to the end of a noun to make it plural (more than one).
* Books: Same as above.
* Boxes: Some nouns with an "s" or "x" at the end add "es" to become plural.
Third-person singular present tense:
* He walks: Adds an "s" to the verb to indicate the action is performed by a singular subject in the present tense.
* She sings: Same as above.
Possessive:
* The dog's bone: Adds an "s" to a noun to show possession (belonging to).
* The girl's shoes: Same as above.
Other uses:
* -ness: Used to form nouns from adjectives (e.g., "happy" -> "happiness").
* -ship: Used to form nouns indicating state or relationship (e.g., "friend" -> "friendship").
* -ism: Used to form nouns indicating a belief, system, or practice (e.g., "capital" -> "capitalism").
Note: There are many other suffixes in English, and their use can be complex.