Etymological roots are indicated by the sign ç.

Language groups are as follows: SKT: Sanscrt; E: Egyptian; HB: Hebrew; GK: Greek; L: Latin; AS: Anglo Saxon; ME: Middle English; OHG: Old High German; G: German; OFR: Old French; FR: French; IT: Italian; ICL: Icelandic; N: Nordic; SW: Swedish.

Night - L: nox, noct-; GK: nux, nukt-; SKT: nakta; AS: niht; G: nacht - all from Indo-Germanic nokt; (not, naught; note, notch - as a mark, sign or name by which something is known, by which it is brought to notice, noticed, made known, notified, notorious, escapes no-thingness); see Knot = tight fastening, bond, knitted cluster, knob; L: nodus = a knot; çNEDH = to bind, tie (night, nought). HB: lailah = night, suggests three associated notions; çLA = indefinitely prolonged line, motion without term, indefinite expansion, action without end; çLI = lesion, cohesion, tendency of things towards each other, inclination; adherence, cohesion, conjunction; çLL = extension opposed to itself, circular motion, conjunction of contraction and extension, that which envelops and ties things together, night.