--- R Arber <rfarber@...> skrev:

>
>
> Hello,
> Please explain why the <singular nominative>, i.e.
> subject of a sentence,
> change,

It doesn't. "Buddho" is nominative; "Buddha" is not
nominative but the stem form, and used as first
element in a compound, e. g. "Buddha-saasana".

The stem form is also usually identical with the
vocative, though the vocative "Buddha" is purely
theoretical and doesn't appear in the texts.

Gunnar



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gunnargallmo@...