tourist vs rubberneck

tourist and rubberneck both are nouns.

Word	Noun	Adjective	Verb	Adverb
tourist	Yes	No	No	No
rubberneck	Yes	No	Yes	No

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

Other hyponyms of tourist include excursionist, sightseer, tripper.

tourist (noun)	rubberneck (noun)
someone who travels for pleasure	a person who stares inquisitively
	a tourist who is visiting sights of interest

tourist (verb)	rubberneck (verb)
	strain to watch; stare curiously