What is the difference between Buxus and Ilex?
The two plants are completely unrelated, belonging to different families. Ilex is commonly known as holly - it usually has prickly, relatively large, evergreen leaves and they generally make much larger shrubs/trees than Buxus. Female plants produce berries, mostly red ones. Buxus or box is commonly used for hedging or topiary, has small, evergreen leaves and these days, is prone to several diseases/infestations. If you google both and select images, you will see how different they are.