What is the difference between Salesforce Marketing Cloud and pardot?

Salesforce Marketing Cloud: It is positioned as a B2C platform. larger databases with smaller value sales would do better with Marketing Cloud. Marketing Cloud has other functions like Advertising Studio and Mobile Studio.
Pardot: It is positioned as a B2B platform. Smaller databases with higher value sales would be better targeted via Pardot. It is primarily an email marketing platform. It enables greater marketing and sales alignment for B2B teams.