Noun
stress accent (plural stress accents)
(phonology) A method or application of realizing phonological prominence of a segment phonetically by loudness or duration.
Antonym: pitch accent
Proto-Germanic developed a strong stress accent on the first syllable of the root (although remnants of the original free PIE accent are visible due to Verner's Law, which was sensitive to this accent). Source: Internet
Such minimal systems are sometimes called pitch accent since they are reminiscent of stress accent languages, which typically allow one principal stressed syllable per word. Source: Internet