Individual #derivational_morphology  the part of grammar that deals with the derivations of words
  >part of:  morphology.grammar.studies  studies of the rules for forming admissible words
     >part of:  grammar.studies  studies of the formation of basic linguistic units
        >part of:  synchronic_linguistics__descriptive_linguistics__descriptivelinguistic  an explanation of a person's mastery of their native language
           >part of:  linguistics  the scientific study of language
     >part of:  theoretical_linguistics__theoreticallinguistic
        >part of:  linguistics  the scientific study of language

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