Miscommunication is a noun. ... Nouns provide the names for all things: people, objects, sensations, feelings, etc.

Is communicative a noun or adjective?

"Communicative" is an adjective (expresses quality) and "communication" is a noun (a subject).

Can misunderstanding be an adjective?

adjectivesa serious/terrible misunderstandingThere have been some serious misunderstandings which have led to conflict. a little misunderstanding (=one that is not serious)We need to clear up this little misunderstanding.