凹凸【おうとつ】
unevenness, bumpiness, roughness, ruggedness, imbalance, inequality, unevenness, disparity
凸版印刷【とっぱんいんさつ】
letterpress, relief printing
凸版【とっぱん】
letterpress, relief printing
凸凹【でこぼこ】
unevenness, roughness, ruggedness, bumpiness, inequality, imbalance, unevenness, difference