IPA: /kəmˈpɛndɪəm/
KK: /kəmˈpɛndɪəm/
A collection of different items or a summary of important information about a particular subject.
The professor provided a compendium of research articles for the students to study.
Compendium → It is formed from "com-" (meaning together) and "pendere" (meaning to weigh). The word refers to a collection that weighs together or summarizes key points.
Think of gathering information 'together' ('com-') and 'weighing' it ('pendere') to create a summary — that's what a compendium is.
No commonly confused words.