neat as a pin vs sanitary

neat as a pin

adj

  • (simile) Very neat and tidy. 

sanitary

noun

  • Sanitary towel. 

adj

  • Clean and free from pathogens; hygienic. 

  • Of, or relating to health. 

How often have the words neat as a pin and sanitary occurred in a corpus of books? (source: Google Ngram Viewer )