use of physical or mental energy; hard work | an effortful attempt to attain a goal |
salty fluid secreted by sweat glands | the act of singing |
condensation of moisture on a cold surface | an intense or violent exertion |
agitation resulting from active worry | the general meaning or substance of an utterance |
| a succession of notes forming a distinctive sequence |
| 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 |
| (physics) deformation of a physical body under the action of applied forces |
| injury to a muscle (often caused by overuse); results in swelling and pain |
| (psychology) nervousness resulting from mental stress |
| difficulty that causes worry or emotional tension |