kiddush vs thanksgiving

kiddush

noun
  • A blessing recited over wine or grape juice in commemoration of the sanctity of the Shabbat or other Jewish holy day. 

thanksgiving

noun
  • A public celebration in acknowledgement of divine favour. 

  • An expression of gratitude. 

  • A short prayer said at meals; grace, a benediction. 

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