Usage of the word "cowman" has significant geographic variation, though is sometimes used interchangeably with terms such as "stockman", "cattleman", "rancher" and "grazier."
[4] In both the British Isles and the United States milkman commonly means someone who delivers milk to houses.
Being farmers and ranchers, American cattlemen are generally landowners, though on occasion the terms may include foremen or managers of particularly large operations.
[3] In modern British English, the word cowman is a core term, not part of a dialect.
In the Old West there were range wars, conflicts between ranchers and farmers over access to resources, especially water.