This is the 279th most frequent Italian word.
capacità
The ability or competence to do something; capacity.
In this case, 'capacità' refers to the volumetric or quantitative capacity that an object can hold, specifically the tank.
La capacità di questo serbatoio è di 50 litri.
The capacity of this tank is 50 liters.
In this sentence, 'capacità' denotes the quality or skill of being able to adapt to new surroundings effectively.
Mostra una grande capacità di adattarsi a nuovi ambienti.
He shows a great capacity to adapt to new environments.
Here, 'capacità' signifies an individual's ability or aptitude to perform a specific task or skill, in this case, learning new languages.