miner / minor are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
miner: (noun) laborer who works in a mine.
minor: (adjective) of lesser importance or stature or rank. (adjective) lesser in scope or effect. (adjective) inferior in number or size or amount. (adjective) of a scale or mode. (adjective) not of legal age. (adjective) of lesser seriousness or danger. (adjective) of your secondary field of academic concentration or specialization. (adjective) of the younger of two boys with the same family name. (adjective) warranting only temporal punishment. (adjective) limited in size or scope.
miner: m·AY·n·er
minor: m·AY·n·er
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)