Using cl-case on symbols

It has been suggested to me about using the following `cl-case'
construct for checking ACTM against a list of symbols.  With
`cond' I would have to use ((or (eq actm 'add) (eq actm 'remove))

How is it that `cond' does not work on symbols but `cl-case' does?
Although I have looked at the documentation of `cl-case', there is
no indication on its appropriateness to symbols.  

   (cl-case actm
     ((add remove)
      (funcall hka mdhook #'kronaire-regexp)
      (funcall hka mdhook #'outline-minor-mode))