heating oil(n = noun.substance) fuel oil - a petroleum product used for fuel;
is a kind of fuel, oil
has particulars: gas oil

N  oil, fat, butter, cream, grease, tallow, suet, lard, dripping exunge, blubber, glycerin, stearin, elaine, oleagine, soap, soft soap, wax, cerement, paraffin, spermaceti, adipocere, petroleum, mineral, mineral rock, mineral crystal, mineral oil, vegetable oil, colza oil, olive oil, salad oil, linseed oil, cottonseed oil, soybean oil, nut oil, animal oil, neat's foot oil, train oil, ointment, unguent, liniment, aceite, amole, Barbados tar, fusel oil, grain oil, rape oil, seneca oil, hydrate of amyl, ghee, heating oil, #2 oil, No, 2 oil, distillate, residual oils, kerosene, jet fuel, gasoline, naphtha, stearin.

N  fuel, firing, combustible, coal, wallsend, anthracite, culm, coke, carbon, charcoal, bituminous coal, tar shale, turf, peat, firewood, bobbing, faggot, log, cinder, ingle, tinder, touchwood, sulphur, brimstone, incense, port-fire, fire-barrel, fireball, brand, amadou, bavin, blind coal, glance coal, German tinder, pyrotechnic sponge, punk, smudge, solid fueled rocket, wax, paraffin wax, paraffin oil, lamp oil, whale oil, oil, petroleum, gasoline, high octane gasoline, nitromethane, petrol, gas, juice, gasohol, alcohol, ethanol, methanol, fuel oil, kerosene, jet fuel, heating oil, number 2 oil, number 4 oil, naphtha, rocket fuel, high specific impulse fuel, liquid hydrogen, liquid oxygen, lox, natural gas, synthetic gas, synthesis gas, propane, butane, hydrogen, brand, torch, fuse, wick, spill, match, light, lucifer, congreve, vesuvian, vesta, fusee, locofoco, linstock, candle, oil, carbonaceous, combustible, inflammable, high octane, high specific impulse, heat of combustion.

absinthe oil, african oil palm, almond oil, american oil palm, aniline oil, animal oil, anthracene oil, babacu oil, babassu oil, baby oil, banana oil, bath oil, birch oil, bitter almond oil, bone oil, burn the midnight oil, calamus oil, camphor oil, canola oil, carron oil, castor oil, central heating, chaulmoogra oil, chinese wood oil, clove oil, coal oil, coconut oil, cod liver oil, cod oil, cod-liver oil, cohune oil, cohune-nut oil, colza oil, cooking oil, copra oil, corn oil, costus oil, cottonseed oil, croton oil, crude oil, cuscus oil, dielectric heating, diesel oil, dippel's oil, dolphin oil, drying oil, essential oil, eucalyptus oil, expressed almond oil, fatty oil, fish oil, fish-liver oil, fixed oil, flaxseed oil, fossil oil, fuel oil, fusel oil, gallipoli oil, gas oil, groundnut oil, hair oil, halibut-liver oil, heating, heating element, heating pad, heating plant, heating system, hedeoma oil, holy oil, honey oil, hydnocarpus oil, hyssop oil, induction heating, lamp oil, lard oil, lemon oil, lemongrass oil, linseed oil, lubricating oil, macassar oil, madia oil, madia oil plant, marmottes oil, menhaden oil, mineral oil, motor oil, mustard oil, neat's-foot oil, neroli oil, oil, oil beetle, oil burner, oil business, oil cake, oil cartel, oil change, oil color, oil colour, oil company, oil conservation, oil filter, oil furnace, oil future, oil geologist, oil gland, oil heater, oil industry, oil lamp, oil meal, oil nut, oil of cloves, oil of turpentine, oil of vitriol, oil of wintergreen, oil paint, oil painter, oil painting, oil palm, oil patch, oil pipeline, oil pressure, oil production, oil pump, oil refinery, oil rig, oil rigger, oil shale, oil slick, oil spill, oil stain, oil tanker, oil tycoon, oil well, oleo oil, olive oil, palm oil, panel heating, paraffin oil, peanut oil, pennyroyal oil, peppermint oil, poonga oil, porpoise oil, radiant heating, rape oil, rapeseed oil, residual oil, rock oil, roosa oil, rose oil, sacramental oil, safflower oil, salad oil, salmon oil, sardine oil, sassafras oil, seal oil, sesame oil, shale oil, shark oil, shark-liver oil, snake oil, soyabean oil, soybean oil, spearmint oil, sperm oil, spike lavender oil, spike oil, stand oil, steam heating, sunflower oil, sunflower-seed oil, sweet almond oil, sweet oil, sweet-birch oil, tall oil, tallow oil, train oil, tuna oil, tung oil, vegetable oil, volatile oil, walnut oil, whale oil, wintergreen oil, wool oil, wormwood oil