What does the tinman and lion need in the wizard of oz?

In "The Wizard of Oz," the Tin Man desires a heart to feel emotions and love, while the Cowardly Lion seeks courage to overcome his fears and assert himself. Both characters believe that the Wizard can grant them these traits, which they feel are essential for their self-worth. Their journeys emphasize that these qualities often come from within, rather than being bestowed by an external source.