young refers to an organism that has not yet reached maturity.

young can refer to someone who is in their early years of life or development.

युवा (Yuva)

English Usage: The young artist displayed great talent in her first exhibition.

Hindi Usage: युवा कलाकार ने अपनी पहली प्रदर्शनी में शानदार प्रतिभा दिखाई।

mammal refers to a class of animals characterized by the presence of mammary glands which produce milk.

mammal can also denote a type of creature commonly encountered in various ecosystems.

जानवर (Janwar)

English Usage: Many mammals have adapted to live in diverse habitats.

Hindi Usage: कई जानवर विभिन्न आवासों में रहने के लिए अनुकूलित हो गए हैं।