lease vs rent-a-car

lease and rent-a-car both are nouns.

Word	Noun	Adjective	Verb	Adverb
lease	Yes	No	Yes	No
rent-a-car	Yes	No	No	No

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

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

lease (noun)	rent-a-car (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)	rent-a-car (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