The word "mine" is commonly used as a noun, meaning a place where minerals or other materials are extracted from the earth. However, it can also be used as a pronoun to show ownership or possession. Synonyms for the noun usage of "mine" include pit, quarry, excavation, and dig. Alternatively, some synonyms for the possessive pronoun usage of "mine" include my own, personal, belonging to me, and proprietary. It is important to differentiate between these two meanings of "mine" when using synonyms to ensure clear communication. Whether used as a noun or a pronoun, "mine" expresses ownership or control over something.