noun, noun which may take the genitive case particle 'no'
choosing between two things; alternative; either-or choice
Refers to a situation where one must choose between two options, often with the implication that both cannot be taken. Commonly used in formal or logical contexts.
進学か就職か、二者択一を迫られている。
I am forced to choose between going on to higher education or getting a job.
This problem is not so simple that it can be answered with a simple either-or choice.