Open English Wordnet
Nouns
(n)tension, tensity, tenseness, tautnessthe physical condition of being stretched or strained“it places great tension on the leg muscles”,
“he could feel the tenseness of her body” (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”