How is the central idea of the songs count on me and lean on me different?

The central idea of "Count on Me" by Bruno Mars is about the importance of being there for someone through thick and thin, promising support and friendship. On the other hand, the central idea of "Lean on Me" by Bill Withers is about providing assistance and comfort to others during tough times, reminding them that they can rely on you for help. Both songs emphasize the value of mutual support and friendship but with slightly different perspectives.