boatman vs punter

boatman and punter both are nouns.

Word	Noun	Adjective	Verb	Adverb
boatman	Yes	No	No	No
punter	Yes	No	No	No

As nouns, punter is a hyponym of boatman; that is, punter is a word with a more specific, narrower meaning than boatman:

Other hyponyms of boatman include canoeist, paddler, ferryman, gondolier, gondoliere, rower.

boatman (noun)	punter (noun)
someone who drives or rides in a boat	(football) a person who kicks the football by dropping it from the hands and contacting it with the foot before it hits the ground
	someone who bets
	someone who propels a boat with a pole