合い言葉: password; watchword; countersign

合口, 合い口: compatibility, rapport, or cooperativeness in anything done together with others / 合口, 合い口: getting along well with others, affinity

相嫁: co-sister-in-law; one's husband's brother's wife

dating agency

連邦: a federation / 連峰: a mountain range

国連: UN, United Nations / 黒鰱: bighead carp

煉獄: (theology) purgatory

連濁: changing of the first syllable of the second word in a compound from unvoiced to voiced

蓮根: lotus root / 漣痕: ripple mark

廉潔: honest