Effort

Attempt

Synonyms: Attempt, endeavour, go, stab, whack, assay, seek, do one's best, work, struggle, undertake, set out, have a go/shot/crack/stab/bash, give it a fly, try, crack, shot, bash, essay, strive, exert oneself, labour, toil, apply oneself, aim, take it on oneself, and give it a burl.

Achievement

Synonyms: Achievement, performance, result, deed, undertaking, work, creation, opus, success, coup, stroke of genius, accomplishment, attainment, feat, exploit, enterprise, handiwork, production, triumph, positive result, and master stroke.

Exertion

Synonyms: Exertion, power, work, application, the sweat of one's brow, endeavour, struggle, strain, trouble, sweat, graft, travail, force, energy, muscle, labour, striving, toil, slog, stress, bother, elbow grease, (hard) yakka, and moil.

Example Sentences

Hard work brings success.

Persistence leads to results.

Always give your best.

Strive for constant improvement.