Tony and Brian are both correct... tooo much firepower in CA and many other states... although I think some states have rec-ended that ruling??
A clip is an external device that holds rounds that are 'pushed' into the weapon... a magazine is an internal device in the weapon, often removable as in the 1911 .45, that physically holds the rounds and feeds them into the chamber of the weapon... many variations of this but basically this is a catch all description.
Some bolt action weapons have an internal magazine that holds the rounds and is not removable, the rounds are fed into the weapon from the top or bottom until capacity is filled and then fed into the firing chamber as the bolt or slide is worked.
Some automatic weapons have additional actions that may incorporate a belt or drum...
Don't you just hate a know it all??