| A | B |
| ethanol | flammable liquid from fermentation |
| organic | from/relating to living organisms |
| proof | a standard measure of alcoholic content |
| plant | factory/workshop for manufacture of product(s) |
| residual | remaining after the main product is taken/separated |
| condensate | material changed into solid or liquid when gas is cooled |
| discard | part that is cast off or rejected |
| yeast | an organism that promoted alcoholic fermentation |
| by-product | material produced in addition to the principal/intended product |
| propagate | to cause to spread out; or multiply |
| ferment | to cause a chemical reaction in which sugar is converted to CO2/alcohol |
| stalk | the main stem of a plant |
| ear | the fruiting spike of corn stalk, cob |
| husk | an outer layer or covering |
| cob | an ear of corn |
| erosion | the state of being worn away by water, wind or ice |
| biodegradable | able to be naturally broken down by bacteria into environmentally safe substances |
| in charge | in control, in the commanding position |
| to the tune of | resulting in the approximate amount of |
| cost effective | able to be sold for more than costs |
| corn stover | an element of biomass |
| switchgrass | another element of biomass |
| main advantage of ethanol | reduce dependence on petroleum |