The company has become a 'giant' of the automotive industry. [=it has become very large and successful]
a big baby who grew up to be a 'giant' of a man [=a very large man]
a 'giant' photograph/machine/wrestler
(..) Grendel will die! Grendel? -The monster is called Grendel. Then I will kill your Grendel. I, Beowulf, killed a tribe of giants on the Orkneys. crushed the skulls of sea-serpents. And this... this troll of yours will trouble you no more. A hero! A hero! I knew that the sea would bring us a hero! (..)2007 Beowulf