زَيْدٌ كَالْأَسَدِ فِي الشَّجَاعَةِ
Zayd is like a lion in courage.
The subject is Zayd, the comparison model is the lion, the marker is kāf, and the shared quality is courage. Omitting a component can affect the form, but omission alone does not make every statement a metaphor.
Representational simile depends on an integrated scene as the shared aspect, not simply on having multiple words.