General meaning of "pure":
* शुद्ध (shuddha): This is the most common and general word for "pure". It can be used for things like pure water, pure gold, pure intentions, etc.
* निर्मल (nirmal): This word emphasizes the absence of impurities or stains, and is often used for things like pure air, pure love, or a pure heart.
* पवित्र (pavitra): This word implies holiness or sacredness, and is often used for things like pure places, pure rituals, or pure thoughts.
Specific contexts:
* For food and drinks: "शुद्ध (shuddha)" or "खुला (khula)" is used to denote purity or unadulterated. For example, "शुद्ध दूध" (shuddha doodh) means pure milk.
* For metals: "शुद्ध (shuddha)" or "खरा (khara)" are used to denote purity. For example, "शुद्ध सोना" (shuddha sona) means pure gold.
Other words that can be used:
* साफ़ (saaf): This word means "clean" or "clear", but can also be used to denote purity in some cases.
* पक्का (pakka): This word means "genuine" or "real", and can also be used to imply purity in some contexts.
The best word to use will depend on the specific context and the nuance you want to convey.