What is the difference between Workflow and Process Builder in Salesforce?

Hi Divya,

You can use the Process Builder to perform more actions than with workflow:

Create a record
Update any related record
Use a quick action to create a record, update a record, or log a call
Launch a flow
Send an email
Post to Chatter
Submit for approval
Call apex methods
But the process builder doesn’t support outbound messages.

Workflow does only 4 actions

Create Task
Update Fiel
Email Alert
Outbound Message

Take a look here for more information

Differences between Process Builder and other tools

https://www.oreilly.com/library/view/learning-salesforce-visual/9781785289835/ch05s02.html

Figure Out Which Tool To Use

https://trailhead.salesforce.com/en/content/learn/modules/business_process_automation/process_whichtool

Thanks,

Nikita Gupta