This is the 3212th most frequent Spanish word.
aparecen
"Appear" or "show up."
The word 'aparecen' is used to indicate the emergence or occurrence of problems spontaneously.
Los problemas siempre aparecen cuando menos los esperas.
Problems always appear when you least expect them.
In this case, 'aparecen' expresses the visibility or emergence of stars as observable at night.
Cada noche aparecen estrellas nuevas en el cielo.
Every night, new stars appear in the sky.
Here, 'aparecen' refers to the physical appearance of characters during a specific time in a narrative or performance.