海の幸[uminosachi] seafood
幸い[saiwai] happiness
幸甚[koujin] pleased
幸福[koufuku] happiness
山の幸[yamanosachi] food of the mountains (wild game, mountain vegetables, mushrooms, etc.)

幸せ者[shiawasemono] fortunate person
多幸[takou] great happiness
不幸[fukou] unhappiness
幸運[kouun] good luck

せざるを得ない[sezaruwoenai] cannot avoid doing
一挙両得[ikkyoryoutoku] killing two birds with one stone
一得[ittoku] one advantage
一得一失[ittokuisshitsu] gaining some and losing some
課税所得[kazeishotoku] taxable income

我が意を得る[wagaiwoeru] to approve of
会得[etoku] understanding
獲得[kakutoku] acquisition
既得[kitoku] vested
既得権[kitokuken] vested rights