treasure vs fortune

treasure and fortune both are nouns.

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

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

Other hyponyms of treasure include valuable, king's ransom, treasure trove, trove.

treasure (noun)	fortune (noun)
art highly prized for its beauty or perfection	an unknown and unpredictable phenomenon that causes an event to result one way rather than another
a collection of precious things	an unknown and unpredictable phenomenon that leads to a favorable outcome
accumulated wealth in the form of money or jewels etc.	a large amount of wealth or prosperity
any possession that is highly valued by its owner	your overall circumstances or condition in life (including everything that happens to you)

treasure (verb)	fortune (verb)
be fond of; be attached to
hold dear