The Governor General represents Her Majesty the Queen at the federal level, and Lieutenant Governors represent the Queen at the provincial level. Moreover, Lieutenant Governors may choose to reserve...
The Governor of a State is the head of the executive in that state while the Lieutenant Governor has to be ready to take control if the Governor dies, resigns, or is impeached.
The secretary of state seems to mostly deal with traffic, and driving. He's almost certainly head of the dmv. and the lt governor does whatever he is told to do by the governor. he has no real duties...