1. Data Replication: Debezium is a distributed platform that captures changes from database logs and streams them in real-time to various systems, while Liquibase is a database schema migration tool that helps in managing and versioning database changes.
2. Data Sync vs Schema Evolution: Debezium focuses on replicating data changes across different systems to keep them in sync, while Liquibase concentrates on evolving and managing database schemas over time.
3. Change Detection: Debezium uses database logs to detect changes and capture them in real-time, enabling applications to react to these changes instantly, whereas Liquibase requires explicit changes to be defined in migration scripts that need to be executed to make changes in the database.
4. Replication vs Migration: Debezium is mainly used for database replication, enabling real-time data integration and analysis, while Liquibase specializes in database schema migration, allowing controlled and versioned database changes.
5. Event-Driven Architecture: Debezium operates on an event-driven architecture, streaming database changes as events to downstream applications, facilitating reactive systems and microservices communication, whereas Liquibase follows a more traditional and sequential approach to apply database changes.
6. Real-Time vs Offline: Debezium operates in real-time, capturing and streaming changes as they happen, ensuring up-to-date information for downstream systems, whereas Liquibase typically requires downtime for applying schema changes, as they are executed explicitly during deployment.

In Summary, Debezium is focused on data replication and real-time synchronization, while Liquibase specializes in database schema migration and versioning.