What part of speech is “miles”
Noun
Definition:
miles is a noun that is used to refer to a unit of measurement. Miles are a unit of measuring length and distance, and usually used to denote long distances, such as from one city to another.
Examples:
1. I'm only five miles away from the station.
2. The expedition was miles from civilization.
3. Their destination was hundreds of miles away.
Tips:
it is important to note that 'miles' in noun form is always just spelled as 'miles,' and never as 'mile's.'