Is there any word to describe the thorns on cactus?

My balcony fairy ball looks like a hedgehog, covered with sharp spikes and covered with a green coat. Flowers look like dancing, but there are few graceful colors. Although the fairy ball looks good, don't look ugly. In fact, it is tenacious. It is hard to believe that breaking thorns will have a fundamental impact on watering buried in the soil. Found some surprises. I forgot to water Juya's fairy ball. I am lazy. I can wait for tea and drink herbs that can clear away heat and detoxify. Although fairy balls are not as beautiful as peony flowers and have no lotus fragrance, I like them.