allo vs amatory

allo

adj

  • Allosexual and/or alloromantic; experiencing sexual and/or romantic attraction. 

noun

  • One who is allosexual and/or alloromantic. 

amatory

adj

  • Of or relating to love, especially sexual love. 

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