carbon oxide

noun 0.800

carbon monoxide

noun 0.742

dioxide

noun 0.721

carbonic acid gas

noun 0.701

carbon

noun 0.701

sulfur dioxide

noun 0.697

greenhouse gas

noun 0.685

inorganic carbon

noun 0.652

oxygen gas

noun 0.644

carbonate

noun 0.640

carbonic acid

noun 0.637

nitrous oxide

noun 0.613

sodium carbonate

noun 0.612

coal

noun 0.608

dry ice

noun 0.607

gas

noun 0.606

carbon dating

noun 0.603

calcium carbonate

noun 0.603

carbonated water

noun 0.601

carbonation

noun 0.600

nitrogen dioxide

noun 0.600

carbon footprint

noun 0.598

coal gas

noun 0.595

oxygen

noun 0.595

bicarbonate

noun 0.594

cocaine

noun 0.593

hydrogen carbonate

noun 0.592

carbo

noun 0.590

methane

noun 0.587

cobalt

noun 0.587

carboxyhemoglobin

noun 0.586

carbon cycle

noun 0.586

activated carbon

noun 0.584

water vapor

noun 0.583

carboxylic acid

noun 0.582

hypercapnia

noun 0.582

monoxide

noun 0.581

chemical compound

noun 0.581

carbon disulfide

noun 0.581

phosgene

noun 0.581

carbon-14

noun 0.577

carbohydrate

noun 0.577

nitrogen

noun 0.575

coke

noun 0.575

carbon cost

noun 0.573

carbonate of lime

noun 0.571

carboxyl

noun 0.565

carbon offset

noun 0.565

charcoal

noun 0.564

natural gas

noun 0.563

carbon credit

noun 0.562

sodium bicarbonate

noun 0.562

radiocarbon

noun 0.562

covalent compound

noun 0.560

baking soda

noun 0.560

sulfur hexafluoride

noun 0.559

nitrogen oxide

noun 0.558

molecular oxygen

noun 0.557

chemical substance

noun 0.555

bicarbonate of soda

noun 0.554

carbon-12

noun 0.553

hydrogen

noun 0.551

dioxygen

noun 0.551

soda water

noun 0.549

chlorofluorocarbon

noun 0.548

organic compound

noun 0.548

silicon dioxide

noun 0.547

air pollution

noun 0.547

hydrogen sulfide

noun 0.546

black carbon

noun 0.546

ideal gas

noun 0.546

global warming

noun 0.546

gas hydrate

noun 0.545

carbon sink

noun 0.545

soda

noun 0.545

coking coal

noun 0.544

air pollutant

noun 0.544

carbon tax

noun 0.542

diethyl carbonate

noun 0.541

dihydrogen

noun 0.541

water gas

noun 0.540

carbonic anhydrase

noun 0.540

laughing gas

noun 0.540

hydrocarbonate

noun 0.539

inorganic compound

noun 0.538

town gas

noun 0.537

graphite

noun 0.536

coconut

noun 0.535

oil gas

noun 0.535

carbon black

noun 0.534

fixed air

noun 0.533

carbon tetrachloride

noun 0.533

gasoline

noun 0.532

covalent bond

noun 0.532

soft drink

noun 0.532

gas and air

noun 0.531

bottled gas

noun 0.531

sulfur oxide

noun 0.531

carbon sequestration

noun 0.531

gas main

noun 0.531