levis vs jeans

levis and jeans both are nouns.

Word	Noun	Adjective	Verb	Adverb
levis	Yes	No	No	No
jeans	Yes	No	No	No

As nouns, jeans is a hypernym of levis; that is, jeans is a word with a broader meaning than levis:

levis: a popular brand of jeans
jeans: (used in the plural) close-fitting trousers of heavy denim for manual work or casual wear

Other hypernyms of levis include blue jeans, denim.

levis (noun)	jeans (noun)
a popular brand of jeans	(used in the plural) close-fitting trousers of heavy denim for manual work or casual wear