Quark rhymes with:
arc, ark, barch, bark, barke, clark, clarke, dark, darke, demark, disembark, embark, harc, hark, harke, intermark, karch, lark, larke, marc, mark, marke, marque, mediamark, narc, parc, park, parke, premark, question-mark, remark, sark, shark, sparc, spark, starck, stark, starke, transpark
Quark sounds like:
quaker's, quakers, quarks, quarries, queers, queries, quirk, quirke, quirks, quirky, quiroga, quiros, quiroz, qureshey, qureshi