(physics) deformation of a physical body under the action of applied forces

difficulty that causes worry or emotional tension

a succession of notes forming a distinctive sequence

(psychology) nervousness resulting from mental stress

a special variety of domesticated animals within a species

(biology) a group of organisms within a species that differ in trivial ways from similar groups

injury to a muscle (often caused by overuse); results in swelling and pain

the general meaning or substance of an utterance

an effortful attempt to attain a goal

an intense or violent exertion

the act of singing