Clodhopper and Good old boy

Clodhopper noun - An awkward or simple person especially from a small town or the country.

Good old boy and clodhopper are semantically related In some cases you can use "Good old boy" instead a noun "Clodhopper".

Good old boy noun - A white male Southerner with an unpretentious convivial manner and conservative or intolerant attitudes and a strong sense of fellowship with and loyalty to other members of his peer group.

Clodhopper and good old boy are semantically related in hick topic. You can use "Clodhopper" instead a noun phrase "Good old boy".