Combinatorial constructions include both inflectional and derivational constructions. Bound morphemes can be further classified as derivational or inflectional morphemes. The Greenlandic verb word consists of a root + derivational suffixes/postbases + inflectional suffixes. The main difference between derivational morphemes and inflectional morphemes is their function for words. Choctaw verbs display a wide range of inflectional and derivational morphology. The language has very little inflectional morphology but much derivational and extensional morphology. Complex inflectional and derivational morphology play a central role in Ojibwe grammar. The grammar of Munsee is characterized by complex inflectional and derivational morphology. Verbs are composed of an abstract stem to which inflectional or derivational prefixes are added. This contrasts with English suffixes, which may be either derivational or inflectional. Reduplication can serve both derivational and inflectional functions. To some authors, the term includes both inflectional and derivational morphology. Distinctions between verbal moods are mainly indicated by derivational morphemes. An important distinction between derivational and inflectional morphology lies in the content/function of a listeme. The is able to "see across" derivational but not inflectional morphemes.