pedaler vs wheeler

pedaler and wheeler both are nouns.

Word	Noun	Adjective	Verb	Adverb
pedaler	Yes	No	No	No
wheeler	Yes	No	No	No

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

Other hyponyms of pedaler include bicycler, bicyclist, biker, cyclist, unicyclist.

pedaler (noun)	wheeler (noun)
a person who rides a pedal-driven vehicle (as a bicycle)	a draft horse harnessed behind others and nearest the wheels of a vehicle
	someone who makes and repairs wooden wheels
	a person who rides a bicycle
	the man at the outermost end of the rank in wheeling