WordNet sense 1 (applying the mind to learning and understanding a subject (especially by reading)):

study

WordNet sense 2 (a place where work is done):

workplace

WordNet sense 3 (a product produced or accomplished through the effort or activity or agency of a person or thing):

piece of work

WordNet sense 4 (the total output of a writer or artist (or a substantial part of it)):

oeuvre, body of work

WordNet sense 5 (have and exert influence or effect):

influence, act upon

WordNet sense 6 (have an effect or outcome; often the one desired or expected):

act

WordNet sense 7 (be employed):

do work

WordNet sense 8 (cause to work):

put to work

WordNet sense 9 (proceed along a path):

make

WordNet sense 10 (prepare for crops):

crop, cultivate

WordNet sense 11 (shape, form, or improve a material):

process, process, work on

WordNet sense 12 (make something, usually for a specific function):

forge, form, mold, shape, shape, mould

WordNet sense 13 (cause to happen or to occur as a consequence):

bring, play, wreak, make for

WordNet sense 14 (perform as expected when applied):

function, go, operate, run

WordNet sense 15 (make uniform):

knead

WordNet sense 16 (use or manipulate to one's advantage):

exploit, exploit

WordNet sense 17 (find the solution to (a problem or question) or understand the meaning of):

lick, solve, work out, figure out, puzzle out

WordNet sense 18 (the occupation for which you are paid):

employment

WordNet sense 19 (cause to undergo fermentation):

ferment, ferment

WordNet sense 20 (go sour or spoil):

sour, turn

WordNet sense 21 (give a workout to):

exercise