Hi Arun,
Above information is correct. In simple terms the difference is below...
Catalog folder contains SAP HANA’s data dictionary
1. All the physical tables and views can be found under the Catalog node
2. All data structures, tables, and data which can be used.
Content represents the design-time repository
1. Content folder holds all information view (models) created with the Modeler.
2. The Models are organized in Packages
3. Physically these models are stored in database tables which are also visible under Catalog
4. The created Column Views are always located in schema _SYS_BIC, their metadata in schema _SYS_BI