This is the 4863rd most frequent Catalan word.
tauró
Shark.
Here, 'tauró' is used to refer to a literal shark, the marine animal.
El tauró nedava prop de la costa.
The shark was swimming near the shore.
In this sentence, 'tauró' is used metaphorically to describe someone's characteristics.
És valent com un tauró.
He is brave like a shark.
This usage of 'tauró' straightforwardly refers to the animal seen in a program, thus serving as a common noun.