Where can we display the lightning component in Salesforce?

Hi Achintya,

Lightning Component can be used as

• Aura Component Bundle Design Resources
• Use Aura Components in Lightning Experience and the Salesforce Mobile App
• Navigate Across Your Apps with Page References
• Get Your Aura Components Ready to Use on Lightning Pages
• Use Aura Components in Community Builder
• Use Aura Components with Flows
• Add Components to Apps
• Integrate Your Custom Apps into the Chatter Publisher
• Using Background Utility Items
• Use Lightning Components in Visualforce Pages
• Add Aura Components to Any App with Lightning Out (Beta)

For more detail, you can refer https://developer.salesforce.com/docs/atlas.en-us.lightning.meta/lightning/components_using_intro.htm