noun which may take the genitive case particle 'no', expression, noun
ordinary; run-of-the-mill; usual
A set phrase meaning 'commonplace' or 'nothing special', often used to describe things that are typical or to be expected in the world.
His failure is nothing out of the ordinary.
As is common in life, people only realize the value of something after they lose it.
Compound of 世 (yo, 'world, society') + の (no, possessive particle) + 常 (tsune, 'usual, ordinary'). Literally 'the ordinary of the world'.