靴磨[kutsumigaki] shoeshine
切磋琢磨[sessatakuma] cultivate one's character by studying hard
雪達磨[yukidaruma] snowman
達磨[daruma] daruma
不磨[fuma] permanence

磨き砂[migakizuna] polishing sand
磨き紙[migakigami] emery paper
磨き上げる[migakiageru] to polish up
磨き粉[migakiko] polishing powder
磨く[migaku] to polish