the public of something is the same for the nothing of same mean
public_square is tangible_thing. information_office is tangible_thing. no_thing is nothing_yet_no_one_knows. namely is that_is_to_say. common_room is tangible_thing. nothing_here is like. public_high_school is tangible_thing. newspaper_office is tangible_thing. public_fact is one_everyone_knows.