a gentle giant
Some people are intimidated by his size, but in fact he's a gentle giant
a giant of a man
He was a giant of a man, standing nearly seven feet tall


corporate, multinational
car, chemicals, financial, food, industrial, oil, retail, etc.
The oil giant Esso is planning to set up a new refinery in the port
Camus is considered to be one of the twentieth century's literary giants


~ among/amongst
The Amazon is a giant amongst rivers
~ of
The company is now one of the giants of the computer industry