designboom gets a primary seem in the south african artist's new exhibition, 'oonomathotholo: ancestral whispers', at friedman benda NY. erode fray rub lower take in shave chafe Chunk abrade erase corrade fret sharpen gall scrape frazzle wear out chew gnaw file graze scour wipe (away) disintegrate rasp decompose scuff nibble corrode sandblast grat