noun
shoe polishing; shoeshine
Refers to the act of polishing shoes or the resulting shine. Can also refer to a person who shines shoes for a living, though that usage is less common.
駅前で靴磨きをしている人を見かけた。
I saw someone shining shoes in front of the station.
革靴の靴磨きは週に一度が理想だ。
Ideally, leather shoes should be polished once a week.
Specifically a shoeshine shop or person, while 靴磨き is the general act or result.
Compound of 靴 (shoe) and 磨き (polishing), the noun form of 磨く (to polish).