What does Arjun mean?
From Sanskrit arjuna (अर्जुन), 'white, bright, silvery, clear'. Best known as the heroic third Pandava prince and Krishna's friend in the Mahabharata; the literal root sense is 'shining/white' rather than 'warrior'.
What does Aarav mean?
From Sanskrit arava (आरव), literally 'a sound, roar, or shout'. Although hugely popular today and widely marketed as meaning 'peaceful' or 'calm', that gloss is a modern reinterpretation not supported by the root; the attested classical sense is 'noise/sound', sometimes softened to 'melody'.