What is the meaning of emphasis?

noun

• Special importance or significance.
  • usage: "the red light gave the central figure increased emphasis"; "the room was decorated in shades of grey with distinctive red accents"
  • synonyms: accent
• Intensity or forcefulness of expression.
  • usage: "the vehemence of his denial"; "his emphasis on civil rights"
  • synonyms: vehemence
• Special and significant stress by means of position or repetition e. G..
• The relative prominence of a syllable or musical note (especially with regard to stress or pitch. )
  • usage: "he put the stress on the wrong syllable"
  • synonyms: stress, accent