Keyword "cyclic" or "periodic"?

[N. J. A. Sloane]

Zak proposed a new keyword:
Just two examples:

A053879  n^2 mod 7. (* perodicity not mentioned *)
A070472 n^3 mod 7. (* perodicity not mentioned *)

In general, 
keyword "cyclic"  or "periodic"
may be added, right?

Me:   I think it is simpler just to put this as a Comment

NJAS