Supply Chain Management (SCM) and Supply Management (SM) are related concepts, but they have some key differences. Here are some of the main differences between these two concepts:

1. Scope: Supply Chain Management encompasses the end-to-end management of all activities involved in the production and delivery of goods and services, including planning, sourcing, production, transportation, and delivery. In contrast, Supply Management focuses on the procurement and management of goods and services from external suppliers.
2. Internal vs. External Focus: SCM has an internal focus, in that it involves the coordination and optimization of internal supply chain activities. SM, on the other hand, has an external focus, in that it involves the management of relationships with external suppliers.
3. Cross-Functional Collaboration: SCM involves close collaboration between different functions within a company, including operations, logistics, and marketing, in order to optimize the supply chain. SM, in contrast, is typically focused on procurement and is managed by a dedicated procurement team.
4. Strategic vs. Tactical: SCM is typically seen as a strategic function, as it involves the long-term planning and optimization of the supply chain. SM, on the other hand, is often viewed as a tactical function, as it involves day-to-day procurement activities and supplier management.

In summary, while Supply Chain Management and Supply Management are related concepts, they have different scopes, foci, and levels of strategic importance. SCM involves the end-to-end management of all activities involved in the production and delivery of goods and services, while SM is focused on the procurement and management of goods and services from external suppliers.