What are the points that differ siem & soc from each other?

 What is the difference between a SIEM (Security Information and Event Management) and a SOC (Security Operations Centre)?

Do they work together? And if independent when to use which? An article that I just read had a paragraph - Modern SIEM security platforms combine SIM and SEM, aggregating both historical log data and real-time events and establish relationships that can help security staff identify anomalies, vulnerabilities and incidents. The main focus of SIEM is on security-related incidents and events, such as succeeded or failed logins, malware activities or escalation of privileges. These insights can be sent as notifications or alerts, or discovered by security analysts using the SIEM platform’s visualization and dashboarding tools.