Answer:
productivity linguistic ability
Explanation:
Productivity linguistic ability -
It refers to the ability or the creativeness to create new words by using the basic words of a particular language , is referred to as productivity .
Productivity is also known as creativity or open - endedness .
It is one of the most common and simplest method to generate new words of phrases .
Hence , from the given scenario of the question ,
Washoe indicates the swan as a waterbird , is the indication of productivity .
