What is the difference between LiveMessage and Digital Engagement Messaging?

Digital Engagement:–Digital Engagement Pricing. Reach customers across every digital channel — including mobile messaging, web chat, social networks, and more — to provide a seamless service experience all on the #1 platform for service.
LiveMessage—Salesforce LiveMessage is a mobile messaging solution to provide personalized conversational service to your customers with the use of bots or agents. … Salesforce LiveMessage is part of the Salesforce Service Cloud suite which you can include as an add-on on its Lightning Enterprise and Lightning Unlimited Editions.