spongy vs unheavy

spongy

adj
  • Drunk. 

  • Wet; drenched; soaked and soft, like sponge; rainy. 

  • Having the characteristics of a sponge, namely being absorbent, squishy or porous. 

unheavy

adj
  • Not heavy. 

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