The uses of nouns are as a subject,direct object,indirect object,appositive,subject complement,object complement,noun of direct address,objective complement,and 6 more that i don't know
A common noun is a word for any person (girl), place (country), thing (bridge), or idea (joy). A proper noun is a specific name or title for a person (Lisa), place (Italy), thing (London Bridge), or...
Simple sentence structure goes like this..
(adjective modifying noun) (noun) (verb).
Example:.
Large buildings exist..
.
You can get more complex by adding direct and indirect objects, and also by...