Both 齟 (ソ) and 齬 (ゴ) are on'yomi. ざご incorrectly voices 齟. そぐ misreads 齬 as グ, and そこ is also incorrect. 齟齬 (the teeth radical in both kanji is a clue) means a disagreement, inconsistency, or conflict between things that should align, like facts or gears not meshing.

齟 (ソ) と 齬 (ゴ) は共に音読みです。ざごは齟の濁音化が誤り、そぐは齬の読み間違いです。そこも不正確です。齟齬とは、物事が食い違って合わないこと、不一致や意見の対立を指します。歯が噛み合わない状態を表す漢字です。