good fortune vs luckiness

good fortune and luckiness both are nouns.

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

As nouns, good fortune and luckiness are synonyms defined as:

good fortune and luckiness: an auspicious state resulting from favorable outcomes

Other synonyms of good fortune include good luck.

good fortune (noun)	luckiness (noun)
a stroke of luck	an auspicious state resulting from favorable outcomes
an auspicious state resulting from favorable outcomes