infuse vs instil

infuse

verb
  • To instill as a quality. 

  • To inspire; to inspirit or animate; to fill (with). 

  • To steep in a liquid, so as to extract the soluble constituents (usually medicinal or herbal). 

  • To cause to become an element of something; to insert or fill. 

  • To undergo infusion. 

  • To make an infusion with (an ingredient); to tincture; to saturate. 

instil

verb
  • Australia, Ireland, and UK standard spelling of instill. 

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