na-adjective, noun which may take the genitive case particle 'no', noun
A yojijukugo describing something immeasurably large or limitless, often used in literary or formal contexts for abstract concepts like compassion, space, or potential.
仏の慈悲は広大無辺だ。
The Buddha's compassion is boundless.
宇宙の広大無辺さに圧倒される。
I am overwhelmed by the vastness of the universe.