So remember when i told you guys about biofuels and biodesiel, and i told you that i would look up the meaning of those big words well i did and here they are...etherification is the process of making an ether, especially the removal of alcohols from petroleum products by reacting with sulfuric acid ,esterification is any reaction that results in the production of an ester Aldrichimica Acta Volume from Sigma-Aldrich, interesterification is The reaction of an ester with an alcohol in order to obtain a different ester. transesterification is The reaction of an ester with an alcohol in order to replace the alkoxy group; it is used in the synthesis of polyesters and in the production of biodiesel, distillation is The separation of the volatile parts of a substance from the more fixed; specifically, the operation of driving off gas or vapor from volatile liquids or solids, by heat in a retort or still, and the condensation of the products as far as possible by a cool receiver, alembic, or condenser; rectification; vaporization; condensation; as, the distillation of illuminating gas and coal, of alcohol from sour mash, or of boric acid in steam, hydrogenation is the chemical reaction of hydrogen with another substance, especially with an unsaturated organic compound, and usually under the influence of temperature, pressure and catalysts, oxidation is A reaction in which the atoms of an element lose electrons and the oxidation state of the element increases. so there you have it