an effort to do something

try, effort

a tool that turns quickly, used for making holes in hard substances

practice, exercise

an effort (the usual word)

attempt to achieve something

a test or trial carried out carefully in order to study what happens and gain new knowledge

investigation, test

the act, process, of preparing; something done to get ready

development, readiness

(an occasion of) rehearsing

preparation for performance

to practise (a play, music, a speech etc) before a public performance

prepare for performance

to become adjusted to a new environment, new conditions etc

repeat action to improve

a set of questions, tasks etc used to measure a person's knowledge or ability; an examination or trial (of something) to find its quality, value, composition etc

examination, quiz