Puceron is a French word that refers to aphids, a type of insect that feeds on plants and causes damage to crops. There are many different synonyms for puceron, including plant lice, greenfly, blackfly, and whitefly. While puceron is a more specific term, these synonyms are more general and can refer to a variety of different species of aphids. Farmers and gardeners often use these synonyms to describe the presence of aphids on their plants and to identify different types of infestations. Knowing these synonyms can be helpful when trying to diagnose and treat pest problems in your garden or farm.