lease vs car rental

lease and car rental both are nouns.

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

As nouns, car rental is a hyponym of lease; that is, car rental is a word with a more specific, narrower meaning than lease:

Other hyponyms of lease include hire car, rent-a-car, self-drive, u-drive, you-drive, sublease, sublet.

lease (noun)	car rental (noun)
a contract granting use or occupation of property during a specified time for a specified payment	a rented car
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

lease (verb)	car rental (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