everyday world; mundane world; secular world
Refers to the ordinary, worldly realm as opposed to religious, spiritual, or idealized spheres. Often carries a slightly literary or reflective tone.
The monk left the everyday world behind and devoted himself to ascetic practice.
His stories are always about mundane worldly matters.
浮世 refers to the transient, fleeting world of human existence, often with a Buddhist or historical flavor. 俗世界 is more neutral and simply contrasts the mundane with the sacred or ideal.
Compound of 俗 (ぞく, 'common, vulgar, worldly') and 世界 (せかい, 'world'). The exact historical derivation is uncertain, but the word follows a standard Sino-Japanese pattern for forming abstract nouns.