公有 is the opposite of 私有 (sīyǒu, 'privately owned'). Frequently in collocations: 公有制 (gōngyǒuzhì, 'public ownership system'), 公有财产 (public property), 国有 (state-owned, a subset). Common in Chinese economic and political discourse.
memory
公 = 'public / common' + 有 = 'have / own' → 'publicly owned'. The same 公 appears in 公园 'public park' and 公共 'public (adj.)'.
