\setupinteraction[state=start]

\defineprocessor[smallcaps][style=\sc]
\defineprocessor[bold]     [style=\bf]

\starttext

Apples\index{smallcaps->Apple}
Pears\index{Pears}

Malus domestica\seeindex{smallcaps->Malus domestica}{bold->Apple}

Bonus domestica\seeindex{Bonus domestica}{Pears}

\placeindex[n=1]

\stoptext
