Latin hostis 'stranger. enemy', hospes 'host, guest, stranger' (from *hosti-pot- 'master of guests'; cf. Sanskrit ganapati one of the bynames of Ganesha and like that name meaning 'Lord of Categories') are related to Greek xenos 'stranger', German Gast, Russian gospod 'lord' :- all from PIE root *ghos-ti- 'stranger, guest, host'. Calvert Watkins has a paper on how the original meaning was more along the lines of 'strangers who have a reciprical (guest, non-familial) relationship with one another'. The Hebrew-Aramaic word 'ushpizin '(holy) guests' is from the Greek hospetion from Latin hospitium 'inn', and the London placename, Spitalfields is from 'hospital fields'.

Ceci n'est pas un seing.