Anthropologically, the term 'tribe' has been denigrated due to violence, as Logan, King and Fischer-Wright (2008) note with respect to '[t]ribalism' (emphasis in text, p. 24). If, collectively, we are avoiding the violent ambiguation of the terms associated with tribe, then CoP's should not have attributes or contributions etc. Different language should be used, else we ignore the violent association and continue to use the existing language.
Reference
Logan, D., King, J., & Fischer-Wright, H. (2008). Tribal leadership: Leveraging natural groups to build a thriving organization. New York, NY: HarperCollins Publishers.