fortune vs luckiness

fortune and luckiness both are nouns.

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

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

fortune: your overall circumstances or condition in life (including everything that happens to you)
luckiness: an auspicious state resulting from favorable outcomes

Other hyponyms of fortune include good fortune, good luck, providence, bad luck, ill luck, misfortune, tough luck, failure.

fortune (noun)	luckiness (noun)
an unknown and unpredictable phenomenon that causes an event to result one way rather than another	an auspicious state resulting from favorable outcomes
an unknown and unpredictable phenomenon that leads to a favorable outcome
a large amount of wealth or prosperity
your overall circumstances or condition in life (including everything that happens to you)