end, finish
終 centers on reaching a final point: the end of a process or the act of finishing something.
終 combines 糸 (thread) with 冬 (winter), which likely contributes the sound. The idea of thread ending or winter as the year's end may have influenced the meaning of finishing.
The left side is thread 糸, and the right side is winter 冬. Picture a spool of thread running out just as winter ends the year: 終 is the end.
For シュウ, imagine a shoe at the end of a long thread: shoe -> シュウ, and when the thread runs out, the shoe is finished.
to end; to come to an end; to finish; to close; to be over
end; close; conclusion; termination
last; final; closing
end; ending; close; conclusion
to finish
endgame; final stage
beginning and end
end of war; cessation of hostilities
end; close; conclusion; termination
lifelong; lifetime; for life; life
end; close
end (of life); death; demise
last train (of the day)
terminus; last stop (e.g. train)
all day; for a whole day
full stop; period
cessation; (coming to an) end
deathbed; dying hour; one's death
continuously; from beginning to end; from first to last
closing price
terminal station
end; close; conclusion
final; eventual; ultimate
after the end (of something)