(By Balthasar Bickel & Johanna Nichols): "In many languages with head-marked possession (see Chapter 24) some nouns obligatorily require possessive inflection and cannot be used alone... These are often called bound nouns; here we use the more cumbersome but more precise term obligatorily possessed nouns. The opposition of obligatorily to optionally possessed nouns is often referred to as a distinction between “alienable” and “inalienable” possession (a term pair that is also used in several other senses, one of them mentioned below)."