treasure vs yearn

treasure is a noun but yearn is not a noun.

Word	Noun	Adjective	Verb	Adverb
treasure	Yes	No	Yes	No
yearn	No	No	Yes	No

As verbs, yearn is a hyponym of treasure; that is, yearn is a word with a more specific, narrower meaning than treasure:

treasure (noun)	yearn (noun)
art highly prized for its beauty or perfection
a collection of precious things
accumulated wealth in the form of money or jewels etc.
any possession that is highly valued by its owner

treasure (verb)	yearn (verb)
be fond of; be attached to	desire strongly or persistently
hold dear	have a desire for something or someone who is not present
	have affection for; feel tenderness for