An anagram is a word formed by rearranging all the letters of another word, using each letter exactly once. These words use every letter from "KNSIGGO":
A large ornamental tree (Ginkgo biloba) from China and Japan, belonging to the Yew suborder of Coniferae. Its leaves are so like those of some maidenhair ferns, that it is also called the maidenhair tree.