Public
Community
noun, の adjective
When the public comes together you have yourself a nice community made up of the public.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
ここは公共トイレですよ！カラオケをする場所ではありません。
This is a public bathroom! Not a place to do karaoke.
公共のベビーシッターのサービスがあるんですか？
Is there a public babysitter service?
とある公共施設でボランティアをしていたことがあります。
I used to volunteer at a public facility.