\starttext

    % stripping trailing spaces

    \startcombination[2*1]
        {\framed{Content 1}}{Caption 1}
        {\framed{Content 2}}{Caption 2}
    \stopcombination

    \startcombination[2*1]
        \startcontent
            \framed{Content 1}
        \stopcontent
        \startcaption
            Caption 1
        \stopcaption
        \startcontent
            \framed{Content 2}
        \stopcontent
        \startcaption
            Caption 2
        \stopcaption
    \stopcombination

\stoptext

