ghost

\ \ [OE] In Old English times, ghost was simply a synonym for ‘spirit’ or ‘soul’ (a sense preserved in Holy Ghost); it did not acquire its modern connotations of the ‘disembodied spirit of a dead person appearing among the living’ until the 14th century. However, since it has been traced back to Indo-European *ghois- or *gheis-, which also produced Old Norse geisa ‘rage’, Sanskrit hédas ‘anger’, and Gothic usgaisjan ‘terrify’, it could well be that its distant ancestor denoted as frightening concept as the modern English word does. The Old English form of the word was gāst, which in Middle English became gost; the gh- spelling, probably inspired by Flemish gheest, first appeared at the end of the 15th century, and gradually established itself over the next hundred years.

\ \ Cf.⇒ POLTERGEIST GIGI [20] GI originated, around the beginning of the 20th century, as a US abbreviation of galvanized iron. It was soon in common use in the military, in contexts such as GI can, and the idea seems to have got about that it stood for not galvanized iron but government issue. This misconception propelled it into such combinations as GI shoe, GI soap and (facetiously) GI soldier. By the 1930s this had been shortened to simply GI, designating an enlisted man in the US Army.