meaning of 'stress' - its association with particular arts

Temat przeniesiony do archwium
Chciałbym Was prosić o wyjaśnienie o jakie 'arts' chodzi w poniższej definicji słowa 'stress':

STRESS ,though often used interchangeably with 'emphasis', is distinguishable from it both in some of its implications and in its association with particular arts, where it has acquired specific meanings. It rarely loses entirely its original implication of weight that causes pressure or strain, though this is often merely suggested <"I wouldn't lay too much stress on what you have been telling me," I observed quietly— Conrad) At times stress strongly implies urgency or insistency
nauki humanistyczne?
i. e. in linguistics we talk about stressed syllables; never heard of emphasized syllables :-)
Dziękuję :)