公安|こうあんkouan[0]heiban (flat)

1. nounpublic peace; public safety; public security; peace and order
2. nounsecurity police

• Synonym治安ちあんNeutral治安（ちあん）: neutral term for the state of public order in society; typically evaluated as good or bad, as in 治安がいい or 治安が悪い, often when discussing neighborhoods, cities, or countries.

Use 公安 for public security as an institutional or governmental concern, and 治安 for the state of public order in society, as in whether an area is safe or unsafe.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 公共こうきょうの秩序ちつじょが保たもたれていること。