car rental vs lease

car rental and lease both are nouns.

Word	Noun	Adjective	Verb	Adverb
car rental	Yes	No	No	No
lease	Yes	No	Yes	No

As nouns, lease is a hypernym of car rental; that is, lease is a word with a broader meaning than car rental:

Other hypernyms of car rental include letting, rental.

car rental (noun)	lease (noun)
a rented car	a contract granting use or occupation of property during a specified time for a specified payment
	property that is leased or rented out or let
	the period of time during which a contract conveying property to a person is in effect

car rental (verb)	lease (verb)
	engage for service under a term of contract
	grant use or occupation of under a term of contract
	let for money
	hold under a lease or rental agreement; of goods and services