Matching Pairs Nail DisordersOnline version Match the nail disorder to its also known as name. by Rosalind Carter 1 koilonychia 2 Beau's lines 3 onychophagy 4 plicatured nail 5 leukonychia spots 6 onychogryposis 7 pincer nail Also known as folded nail. Also known as spoon nails. Also known as bitten nails. Also known as white spots. Also known as ram's horn. Also known as furrows. Also known as trumpet nail.