expression
the former and the latter; A and B
Used to refer to two previously mentioned items, often in contrast or comparison. 甲 is the first (former) and 乙 is the second (latter). Common in formal or written contexts.
この二つの案のうち、甲と乙ではどちらが良いと思いますか。
Between these two proposals, which do you think is better, the former or the latter?
契約書には甲と乙の署名が必要です。
The contract requires the signatures of Party A and Party B.