What is the difference between a data lakehouse and a delta lake?

I am new to Databricks. I am reading Microsoft documentation on data lakehouse. In the documentation they make reference to delta lake without explaining what the difference is or even if there is any. Can someone please help explain this to me. Any help would be greatly appreciated.

The Lakehouse is a paradigm coined by this paper, while Delta Lake is a technology that can be used to create a Lakehouse-like Data platform.

Alternatives to the Lakehouse are:

• Basic Data Lakes
• Data Warehouses

Alternatives to Delta Lake are:

• Apache Iceberg
• Apache Hudi

I hope this makes it a little bit more clear.