They can be classified as free morphemes, which can stand alone as words, or bound morphemes, which must be combined with another morpheme to form a complete word.
Some of the basic types of a morpheme are stem, base and/ or roots.
Other types are free morpheme, bound morpheme, inflectional morpheme, and derivational morpheme.
Free Morpheme is just a simple word that has a single morpheme; thus, it is free and can occur independently. Bound Morpheme is the opposite of a free morpheme, it is a bound morpheme that is used with a free morpheme to construct a complete word, as it cannot stand independently.
