What the difference in firebase-core and firebase-analytics libraray?

Question

Google recently released new verison of Firebase. So I was trying to migrateto Firebase analytics.

So what is the difference between these libraries

Answer 1

Based on google docs you don't need firebase-core anymore:

You no longer need to add the Android library com.google.firebase:firebase-core. This SDK included the Firebase SDK for Google Analytics. Now, to use Analytics (or any of the Firebase products that require or recommend the use of Analytics), you need to explicitly add the Analytics dependency: com.google.firebase:firebase-analytics:17.2.0.