Esperanto: A Complete and Comprehensive Grammar/Word roots

Word Roots
Words in Esperanto consist of roots, which carry the meaning, and the part-of-speech ending, which indicates the function of the word in the sentence. However, most Esperanto roots exhibit an inherent part of speech; that is, most roots are inherently nouns, verbs or adjectives. Bearing this point in mind makes Esperanto word-building easier to understand.