bound (e.g. bio- in biology). Words like chairman that contain two free morphemes (chair and man) are referred to as compound words.

Cranberry morphemes are a special form of bound morpheme whose independent meaning has been displaced and serves only to distinguish one word from another, like in cranberry, in which the free morpheme berry is preceded by the bound morpheme cran-, meaning "crane" from the earlier name for the berry, "crane berry".