This is the 795th most frequent Armenian word.
տասնյակ
"Tens" or "decade."
In this sentence, 'տասնյակ' (tasnyak) refers to a group of ten, commonly used to mean 'dozens', signifying a large number of books.
Ես հավաքել եմ տասնյակ գրքեր:
I have collected dozens of books.
Here, 'տասնյակ' specifies an approximate number, used to give an estimate of the count of people.
Տասնյակ մարդիկ եկան նախաձեռնությանը աջակցելու:
Dozens of people came to support the initiative.
The term 'տասնյակ' is utilized here to describe a variety of choices, implying considerable quantity.