noun
you two; both of you
Used to address two people, typically males of equal or lower status. Formal and somewhat old-fashioned; in modern casual speech, 二人とも or 君たち is more common.
両君にはこのプロジェクトを任せる。
I entrust this project to you two.
両君の意見を聞かせてほしい。
I'd like to hear the opinions of both of you.
noun
two monarchs; two rulers
Refers to two sovereigns or heads of state. Rare and mostly found in historical or formal political contexts.
その条約は両君の名のもとに結ばれた。
The treaty was concluded in the names of the two monarchs.
Compound of 両 (ryō, 'both') and 君 (kun, 'lord' or 'you'). The exact historical derivation is uncertain, but the word has been used in formal address and historical references to two rulers.