Earthwork rhymes with:
artwork, beadwork, brushwork, casework, clockwork, fieldwork, firework, footwork, framework, groundwork, guesswork, handiwork, hardwork, homework, housework, latticework, leadwork, legwork, masterwork, metalwork, needlework, network, openwork, paperwork, patchwork, piecework, plasterwork, roadwork, schoolwork, spadework, teamwork, voicework, wallwork, waterwork, woodwork