(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)."
For "obligatorily possessed nouns" (i.e. nouns that must have a possessive person index), Haspelmath (2017) introduced the term "possidend nouns". Possidend noun roots are "bound" in the sense that they cannot occur on their own (without an index), but noun roots can be "bound" in other ways (e.g. by requiring a number affix, a case affix, or an article for free occurrence).