Nouns

(n)stress, emphasis, accentthe relative prominence of a syllable or musical note (especially with regard to stress or pitch)“he put the stress on the wrong syllable”
(n)tension, tenseness, stress(psychology) a state of mental or emotional strain or suspense“he suffered from fatigue and emotional tension”, “stress is a vasoconstrictor”
(n)stress, focusspecial emphasis attached to something“the stress was more on accuracy than on speed”
(n)stress, straindifficulty that causes worry or emotional tension“she endured the stresses and strains of life”, “he presided over the economy during the period of the greatest stress and danger” (R.J.Samuelson)
(n)stress(physics) force that produces strain on a physical body“the intensity of stress is expressed in units of force divided by units of area”

Verbs

(v)stress, emphasize, emphasise, punctuate, accent, accentuateto stress, single out as important“Dr. Jones emphasizes exercise in addition to a change in diet”
(v)stress, accent, accentuateput stress on; utter with an accent“In Farsi, you accent the last syllable of each word”
(v)try, strain, stresstest the limits of“You are trying my patience!”
(v)stressto suffer from stress