irreconcilable vs unpleasable

irreconcilable

adj

  • Unable to be reconciled; opposed; uncompromising. 

  • Incompatible, discrepant, contradictory. 

noun

  • Something that cannot be reconciled. 

unpleasable

adj

  • That cannot be pleased; implacable. 

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