The associative plural marker is non-affixal and may not express any other variety of plural.  Consider the Old Icelandic associative construction <i><b>þeir</b> Gizorr</i> '<b>PL</b> Gizorr' for "Gizorr and his associates" and the unacceptable additive construction *<i><b>þeir</b> griþingr</i> '<b>PL</b> bulls' for "bulls."

<br><br><b>Reference</b><br>
Daniel, Michael & Moravcsik, Edith. 2008. The Associative Plural.
In Haspelmath et al (2008), chapter 36. Available online at <a href="http://wals.info/feature/36">
http://wals.info/feature/36</a href>.
