gas guzzler vs automobile

gas guzzler and automobile both are nouns.

Word	Noun	Adjective	Verb	Adverb
gas guzzler	Yes	No	No	No
automobile	Yes	No	Yes	No

As nouns, automobile is a hypernym of gas guzzler; that is, automobile is a word with a broader meaning than gas guzzler:

gas guzzler: a car with relatively low fuel efficiency
automobile: a motor vehicle with four wheels; usually propelled by an internal combustion engine

Other hypernyms of gas guzzler include auto, car, machine, motorcar.

gas guzzler (noun)	automobile (noun)
a car with relatively low fuel efficiency	a motor vehicle with four wheels; usually propelled by an internal combustion engine

gas guzzler (verb)	automobile (verb)
	travel in an automobile