A common definition of a dichotomy is:
division into two parts
mutually exclusive or contradictory groups or entities...
A division or contrast between two things...
Parts, groups, entities and things are all fine words, but they're all very broad. Almost anything can be a thing, or an entity. Practically everything is a part of something or a group of other things. None of those terms is in any way specific to a dichotomy.
Is there a term that specifically means one end of a dichotomy, or even something close to that?
If not, what's the closest we can get?
Perhaps something defined in terms of opposition to the other, like antithesis?
The sentence that has sent me in search of this (probably non-existent word) is:
There is a tradeoff between password length, and how often we expect users to change passwords, and we have chosen the wrong end-of-the-dichotomy.
I'd like to find a single word to complete the sentence, if there is one.