Chapter 2 Words and Their Parts: Lexicon and Morphology Introduction: Words Are Tangible What Does It Mean to Know a Word? Lexical Categories (Parts of Speech) How to Identify Lexical Categories Verbs Nouns Adjectives Pronouns Determiners Prepositions and Postpositions Adverbs Conjunctions Morphemes Are Word Parts That Carry Meaning Morphemes Can Be Free or Bound Morphemes That Derive Other Words Inflectional Morphemes How Are Morphemes Organized Within Words? Morphemes Are Ordered in Sequence Morphemes Can Be Discontinuous Portmanteau Words Contain Merged Morphemes Morphemes Are Layered Within Words How Does a Language Increase Its Vocabulary? Some Word Classes Are Open, Some Closed How to Derive New Words Compounds Shortenings Back Formation Conversion or Functional Shift Semantic Shift Borrowed Words Inventing Words What Types of Morphological Systems Do Languages Have? Isolating Morphology Agglutinating Morphology Inflectional Morphology Variant Pronunciations of a Morpheme: Allomorphy