fate; destiny (esp. as a mysterious force that binds two people together)

relationship (e.g. between two people); bond; link; connection

family ties; affinity

えん only

opportunity; chance (to meet someone and start a relationship)

えん only; Buddhism

pratyaya (indirect conditions, as opposed to direct causes)

えん only; Also written as 椽

narrow open-air veranda

Adjectival nouns or quasi-adjectives (keiyodoshi)

unrelated; unconnected; irrelevant; indifferent; divorced from; having nothing to do with one; being foreign to one

without relations (esp. of a deceased person); having no surviving relatives

Buddhism

unrelated to the teachings of Buddha; unable to be saved by Buddha

fate; destiny

connection; tie; bond; origin

pretext; justification

Buddhism

hetu and prataya (direct causes and indirect conditions, which underlie the actions of all things)

reason; significance; cause

由 only

piece of information that one has heard; I hear that ...; it is said that ...

marriage proposal; marriage talks

engawa; external corridor on the outer side of traditional Japanese houses

縁側 only

bone at the base of a fin (esp. of a flatfish); meat at the base of a fin

rim; brim; edge; brink

blood relationship; consanguinity

blood relative

connection (to a person, place, etc.); relation; affinity

to sever relations (with someone; esp. a relative or spouse); to break off (with)