This is the 3121st most frequent Dutch word.
drietal
A group of three.
In this sentence, 'drietal' is used to refer to a group of three individuals.
Het drietal besloot samen een reis te maken.
The trio decided to take a trip together.
Here, 'drietal' is used to indicate three entities (birds) considered as a unit.
Er zat een drietal vogels op de tak.
There were three birds sitting on the branch.
In this case, 'drietal' is used to describe a set or group of three items (books).