emphasis vs ictus

emphasis

noun
  • Prominence given to a syllable or words, by raising the voice or printing in italic or underlined type. 

  • Special attention or prominence given to something. 

  • The phonetic or phonological feature that distinguishes emphatic consonants from other consonants. 

  • Special weight or forcefulness given to something considered important. 

  • The use of boldface, italics, or other such formatting to highlight text. 

ictus

noun
  • The stress of voice laid upon an accented syllable of a word. Compare arsis. 

  • The pulse. 

  • A sudden attack, blow, stroke, or seizure, as in a sunstroke, the sting of an insect, pulsation of an artery, etc. 

  • In conducting, the indication of a musical event, most often the beat of the tempo or the entry of a section of the orchestra. 

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