This is the 6707th most frequent Catalan word.
selva
Jungle.
Here, "selva" refers to a dense forest or jungle, used in a literal sense to describe a natural environment.
La selva tropical és plena de vida.
The tropical jungle is full of life.
In this sentence, "selva" is used metaphorically to describe a chaotic or dense situation resembling the complexity of a jungle.
Aquest carrer és una selva de cotxes i persones.
This street is a jungle of cars and people.
The term "selva" is applied figuratively here to portray a complex and tangled state of emotions.