infuse vs penetrate

infuse

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

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

  • To instill as a quality. 

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

  • To undergo infusion. 

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

penetrate

verb
  • To enter into; to make way into the interior of; to pierce. 

  • To achieve understanding of, despite some obstacle; to comprehend; to understand. 

  • To move a piece past the defending pieces of one's opponent. 

  • To affect profoundly through the senses or feelings; to move deeply. 

  • To insert the penis into an opening, such as a vagina, mouth or anus. 

  • To infiltrate an enemy to gather intelligence. 

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