Emphasis

A particular stress of utterance, or force of voice, given in reading and speaking to one or more words whose signification the speaker intends to impress specially upon his audience.

A peculiar impressiveness of expression or weight of thought; vivid representation, enforcing assent; as, to dwell on a subject with great emphasis.

the relative prominence of a syllable or musical note (especially with regard to stress or pitch); "he put the stress on the wrong syllable"

special and significant stress by means of position or repetition e.g.