Bohemian vs Slave

Bohemian

name

  • The Czech language. 

adj

  • Of, or relating to Bohemia or its language. 

noun

  • A native or resident of Bohemia. 

Slave

name

  • Synonym of Sclavia 

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