The word(s) "shirk" appears 2 time(s) in 2 verse(s) in Quran in Mohsin Khan translation.

(1) Except him who brings to Allah a clean heart [clean from shirk (polytheism) and Nifaq (hypocrisy)]."

(2) And whoever brings an evil deed (i.e. shirk - polytheism, disbelief in the Oneness of Allah and every evil sinful deed), they will be cast down (prone) on their faces in the Fire. (And it will be said to them) "Are you being recompensed anything except what you used to do?"