immerge vs saturate

immerge

verb
  • To plunge into, under, or within anything, especially a fluid; to dip; to immerse. 

  • To disappear by entering into any medium, as a star into the light of the sun. 

saturate

verb
  • To cause to become completely impregnated, or soaked (especially with a liquid). 

  • To fill to excess. 

  • To satisfy the affinity of; to cause a substance to become inert by chemical combination with all that it can hold. 

  • To render pure, or of a colour free from white light. 

noun
  • Something saturated, especially a saturated fat. 

adj
  • Very intense. 

  • Saturated; wet. 

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