errand boy vs pageboy

errand boy and pageboy both are nouns.

Word	Noun	Adjective	Verb	Adverb
errand boy	Yes	No	No	No
pageboy	Yes	No	No	No

As nouns, pageboy is a hyponym of errand boy; that is, pageboy is a word with a more specific, narrower meaning than errand boy:

Other hyponyms of errand boy include page.

errand boy (noun)	pageboy (noun)
a boy who earns money by running errands	a smooth hair style with the ends of the hair curled inward
	a boy who is employed to run errands