highway robbery vs price

highway robbery and price both are nouns.

Word	Noun	Adjective	Verb	Adverb
highway robbery	Yes	No	No	No
price	Yes	No	Yes	No

As nouns, price is a hypernym of highway robbery; that is, price is a word with a broader meaning than highway robbery:

Other hypernyms of highway robbery include damage, terms.

highway robbery (noun)	price (noun)
robbery of travellers on or near a public road	the property of having material worth (often indicated by the amount of money something would bring if sold)
an exorbitant price	the high value or worth of something
	value measured by what must be given or done or undergone to obtain something
	a monetary reward for helping to catch a criminal
	the amount of money needed to purchase something
	cost of bribing someone

highway robbery (verb)	price (verb)
	ascertain or learn the price of
	determine the price of