Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
English X
English Generation X (link)
English ecstasy (mention)
English Christ (mention)
English cross (mention)
English xing (link)
Ancient Greek Χ (orthographic borrowing)
Ancient Greek Χριστός (mention)

English XXXX (mention)
English XXXX (mention)
English X-ray (compound)
English XXX (mention)
English ex (mention)
English Xmas (mention)
English Xmas (suffix)
English Xianity (mention)
English Generation X (compound)
English xing (mention)
English SXSW (mention)
English Xer (suffix)
English X-Verse (suffix)
English xbow (mention)
English Cygnus X-1 (compound)
English Xlet (suffix)
English 3x3 basketball (compound)
Old English Χp̃es mæssa (mention)
Japanese MtX (mention)
Japanese FtX (mention)
Chinese MtX (mention)
Chinese FtX (mention)