noun
Refers to property owned or maintained by the government or a public entity, such as parks, roads, or public buildings.
公園は公共物だから、みんなで大切に使おう。
Parks are public property, so let's all use them with care.
公有物 specifically refers to property owned by a public entity (e.g., government), while 公共物 emphasizes property for public use.
Compound of 公共 (こうきょう, 'public') and 物 (ぶつ, 'thing, object').