Intradepartmental communication is within a department, while interdepartmental communication is between departments in the same organization.
Intradepartmental communication is the communication among members of a department within an organization, whereas interdepartmental communication refers to communication between two or more departments in the same organization.
For example, when the marketing department communicates with the sales department within a company, it is considered as intradepartmental communication. On the other hand, if the human resources department communicates with the finance department, it constitutes interdepartmental communication.
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