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
(..) - You're my girl. I'll always be your girl. And just like that, she was gone out of my life again. It's one small step for man, one giant leap for mankind. I thought I was going back to Vietnam, but instead they decided the best way for me to fight the communists was to play ping-pong, (..)1994 Forrest Gump