Good world = "'olam tov" (×¢×•×œ× ×˜×•×‘)
There isn't a Hebrew name with that meaning. But you can say "good company" in Hebrew. It's khevreh tov (חברה טוב)
zeh tov (זה טוב)
or ha'olam (אור העולם)
shanah tovah (×©× ×” טובה)
tov, todah (טוב, תודה)
good people = anashím tovím (אנשים טובים)
I think you meant to say "the best IN the world". It is hatov ba'olam.
Good Night
to a man: ata olami to a woman: at olami
That's a good question, here is how you spell it פאכינו
bokehr tov, gveret (בוקר טוב, גברת)
Bokehr tov, gveret (בוקר טוב גברת)