These terms all have a different definition, but they are close in terms of meaning. GMOs have had certain changes in their DNA through genetically engineered techniques. GE means Genetically Engineered and often refers to crops. For example, GE seeds were introduced commercially in 1996 and are now found throughout certain areas of the world, especially places that grow corn, soybeans, and cotton; the GE crops are engineered to withstand the direct application of chemical herbicides and/or GE crops that are engineered to produce toxins that kill certain insect pests. GM stands for Genetic Modification and usually refers to food, as in GM foods, which are produced from GMOs.