lei vs laurel wreath

lei and laurel wreath both are nouns.

Word	Noun	Adjective	Verb	Adverb
lei	Yes	No	No	No
laurel wreath	Yes	No	No	No

As nouns, laurel wreath is a hyponym of lei; that is, laurel wreath is a word with a more specific, narrower meaning than lei:

lei: flower arrangement consisting of a circular band of foliage or flowers for ornamental purposes
laurel wreath: (antiquity) a wreath of laurel foliage worn on the head as an emblem of victory

Other hyponyms of lei include crown, bay wreath, laurel.

lei (noun)	laurel wreath (noun)
flower arrangement consisting of a circular band of foliage or flowers for ornamental purposes	(antiquity) a wreath of laurel foliage worn on the head as an emblem of victory
	an award for winning a championship or commemorating some other event