emphasis in WordNet English dictionary

1. the relative prominence of a syllable or musical note (especially with regard to stress or pitch)
   "he put the stress on the wrong syllable"
   stress  emphasis  accent 
   
2. special importance or significance
   "the red light gave the central figure increased emphasis"; "the room was decorated in shades of grey with distinctive red accents"
   emphasis  accent 
   
3. intensity or forcefulness of expression
   "the vehemence of his denial"; "his emphasis on civil rights"
   vehemence  emphasis 
   
4. special and significant stress by means of position or repetition e.g.
   emphasis