Prose is a style that is natural and uses grammatical structure. Prose is intended to be communicable. Prose is the opposite of poetry, which has rhythmic structure but not a normal speech.
However, there is such thing as ‘prose poetry.’ Prose poetry has prose elements and a poetic technique.
In assumption, I believe you’re referring to prose.
An example of prose would be casual dialogue.
• “Hi, how are you?”
• “I’m fine, thanks.”
Another example of prose would be journalism.
• The State has passed the law of banning plastic straws.
The above are few of the many examples of prose.