A sockman is a person who makes or sells socks.
Sockmen are people who work with socks and might be found in a store or market.
Examples:
The sockman sells many socks.
I want to be a sockman when I grow up.
The sockman makes warm socks.
The sockman has so many socks, he could wear a different pair every day!
The sockman's store is full of colorful socks.
The sockman smiles as he sells his socks.