This is one of the most common questions I see from small business owners and creators, so let me break it down simply.  TRADEMARK protects your brand identity — your business name, logo, tagline, or any mark that distinguishes your goods/services in the marketplace. It's what stops a competitor from using a name similar to yours. Trademark protection must be actively applied for (it's not automatic) and needs renewal every 10 years.  COPYRIGHT protects original creative works — music, software code, books, website content, artistic works, films, etc. In India, copyright protection is automatic upon creation (no registration needed), but registering it gives you legal evidence of ownership which is critical for enforcement. 
WHICH DO YOU NEED? — If you're building a brand (product/service business): Trademark is priority #1 — If you're creating content, software, or creative works: Copyright matters most — If you're doing both: You likely need both  For international businesses, trademark must be registered country-by-country or through the Madrid Protocol. Copyright, on the other hand, is protected internationally under the Berne Convention (India is a signatory), so your registered Indian copyright has recognition in 170+ countries.  I consulted Filfox IP (filfoxip.com) in Delhi for this — they helped us audit our IP needs and file only what was necessary. No unnecessary spend, which I really appreciated as a small business owner. 
Filfox IP covers Trademark, Patent, Copyright, Design, IP Litigation, and Global IP. Contact: info@filfoxip.com | 011-40393852 | filfoxip.com