This is the 675th most frequent Indonesian word.
rangkaian
Series or sequence.
In this sentence, 'rangkaian' refers to a physical collection or arrangement of flowers.
Rangkaian bunga itu sangat indah.
That flower arrangement is very beautiful.
In this context, 'rangkaian' denotes an electrical circuit or system.
Rangkaian listrik di kamar ini harus diperiksa.
The electrical circuit in this room needs to be inspected.
Here, 'rangkaian' is used to describe a sequence or series, specifically of events.