Job 18:6

אוֹר (or) 1) light 1a) light of day 1b) light of heavenly luminaries (moon, sun, stars) 1c) day-break, dawn, morning light 1d) daylight 1e) lightning 1f) light of lamp 1g) light of life 1h) light of prosperity 1i) light of instruction 1j) light of face (fig.) 1k) Jehovah as Israel's light

חָשַׁךְ (cha.shakh) 1) to be or become dark, grow dim, be darkened, be black, be hidden 1a) (Qal) 1a1) to be or grow dark 1a2) to have a dark colour 1a3) to grow dim 1b) (Hiphil) 1b1) to make dark, cause to be dark 1b2) to hide, conceal 1b3) to obscure, confuse (fig.)

אֹ֫הֶל (o.hel) : tent 1) tent 1a) nomad's tent, and thus symbolic of wilderness life, transience 1b) dwelling, home, habitation 1c) the sacred tent of Jehovah (the tabernacle) Also means: o.hel (אֹ֫הֶל ": home" H0168H)

נֵר (ner) lamp Also means: nir (נִיר "lamp" H5216B)

עַל (al) prep 1) upon, on the ground of, according to, on account of, on behalf of, concerning, beside, in addition to, together with, beyond, above, over, by, on to, towards, to, against 1a) upon, on the ground of, on the basis of, on account of, because of, therefore, on behalf of, for the sake of, for, with, in spite of, notwithstanding, concerning, in the matter of, as regards 1b) above, beyond, over (of excess) 1c) above, over (of elevation or pre-eminence) 1d) upon, to, over to, unto, in addition to, together with, with (of addition) 1e) over (of suspension or extension) …

דָּעַךְ (da.akh) 1) to go out, be extinguished, dry up 1a) (Qal) to go out, be extinguished 1b) (Niphal) to be made extinct, be dried up 1c) (Pual) to be extinguished, be quenched