//boldrange_1 for "green", boldrange_2 for "inch".
            Word.Range boldrange_1 = table.Cell(1, 2).Range;//Assign the whole cell range to boldrange, then adjust it with SetRange method.
            boldrange_1.SetRange(table.Cell(1, 2).Range.Start, table.Cell(1, 2).Range.Words[1].End);
            boldrange_1.Bold= 1;

            Word.Range boldrange_2 = table.Cell(2, 2).Range;
            boldrange_2.SetRange(table.Cell(2, 2).Range.Words[4].End, table.Cell(2, 2).Range.Words[5].End);
            boldrange_2.Font.Bold = 1;
            //I've found that boldrange_2.Font.Bold = 1; and boldrange_2.Bold = 1; have the same effect.