stress

nouns

the relative prominence of a syllable or musical note (especially with regard to stress or pitch)
"he put the stress on the wrong syllable"
(psychology) a state of mental or emotional strain or suspense
"he suffered from fatigue and emotional tension"; "stress is a vasoconstrictor"
special emphasis attached to something
"the stress was more on accuracy than on speed"
difficulty 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
(physics) force that produces strain on a physical body
"the intensity of stress is expressed in units of force divided by units of area"
domain category
the science of matter and energy and their interactions
"his favorite subject was physics"
is a type of (narrower)
(physics) the influence that produces a change in a physical quantity
"force equals mass times acceleration"

verbs

to stress, single out as important
"Dr. Jones emphasizes exercise in addition to a change in diet"
put stress on; utter with an accent
"In Farsi, you accent the last syllable of each word"
test the limits of
"You are trying my patience!"
is derived from