Firebase Predictions uses machine learning and applies it to your analytics data. This creates dynamic user groups based on their behavior regarding the app.
Android Instant apps are basically the cloud version of their Google Play counterparts. This article gives you the basic understanding of instant apps.
Cloud Firestore is a fully managed noSQL database from Firebase. Firestore has features like offline access, real-time synchronization etc to handle any amount of data in any manner.
Grammarly, a grammar checker tool has been around for some time now. And thousands of people are using it to write effortlessly without the embarrassing typos and grammatical errors.