合縁
あ
い
え
ん
Meanings
1
noun, noun which may take the genitive case particle 'no'
good relationship; harmonious bond
Refers to a naturally compatible, harmonious relationship between people, often implying a fated or easy connection.
Those two have a good relationship, so when they work together things go smoothly.
As the saying 'aien kien' suggests, the bonds between people are mysterious things.
2
noun, noun which may take the genitive case particle 'no'
affectionate relationship; loving bond
archaic
Only when written 愛縁
Archaic sense, specifically written as 愛縁. Refers to a relationship characterized by love and affection, not just general compatibility.
In old documents, the word 'aien' (written 愛縁) is used to express the deep affection between husband and wife.