This is the 1902nd most frequent Spanish word.
mundo
World; universe.
Here, 'mundo' refers to our planet Earth and the entirety of its natural and cultural aspects.
El mundo es un lugar lleno de maravillas.
The world is a place full of wonders.
In this case, 'mundo' implies experience or global perspective gained through exposure or life events.
Tiene mucho mundo para su edad.
He is very worldly for his age.
Here, 'mundo' is used metaphorically to refer to the scope of someone's personal imagination or mental space.