Happiness
Luck, Fortune
adverb, noun, な adjective
さいわい
幸 (さち、not on WK) Good Luck, Fortune, Happiness
幸あれ (さちあれ、not on WK) Good Luck!, All The Best
幸せ (しあわせ) Happiness
幸い (さいわい) Happiness, Luck, Fortune
幸福 (こうふく) Happiness
災い (わざわい) Disaster, Misfortune
幸い さいわい and 災い わざわい sound similar but are complementary opposites.