roper vs puncher

roper and puncher both are nouns.

Word	Noun	Adjective	Verb	Adverb
roper	Yes	No	No	No
puncher	Yes	No	No	No

As nouns, puncher is a hypernym of roper; that is, puncher is a word with a broader meaning than roper:

roper: a cowboy who uses a lasso to rope cattle or horses
puncher: a hired hand who tends cattle and performs other duties on horseback

Other hypernyms of roper include cowhand, cowherd, cowpoke, cowpuncher.

roper (noun)	puncher (noun)
a craftsman who makes ropes	a tool for making holes or indentations
a cowboy who uses a lasso to rope cattle or horses	a hired hand who tends cattle and performs other duties on horseback
a decoy who lures customers into a gambling establishment (especially one with a fixed game)	someone who delivers punches