imprescindible vs must-have

imprescindible

adj

  • Indispensable, essential, imperative, vital. 

must-have

adj

  • Essential to own. 

noun

  • An item that one must own, or a feature that is essential to a service, etc. 

How often have the words imprescindible and must-have occurred in a corpus of books? (source: Google Ngram Viewer )