The associative plural marker acts as the additive plural marker as well.  Additive plurals differ from associative groups in their homogeneity: every member of the additive plural is equivalent to the stem.  Take the following Zulu example: 

<br><br>Associative plural: <i><b>o</b>-faku</i> 'Faku and his company' (from <i>au-faku</i> 'Faku')
<br><br>Additive plural: <i><b>o</b>-kova</i> 'bananas' (from <i>u-kova</i> 'banana')

<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>.
