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No, the word barrier is not an adverb.The word barrier is in fact a noun.
There are many types of barriers of communication for example; language barrier, physical barrier, emotional barrier, listening barrier, cultural barrier, gender barrier etc
It technically can be a barrier; a barrier between the water in the bucket and the ground.
Ricet Barrier's birth name is Barrier, Maurice.
the answer for the most common barrier is a square shaped barrier?