What does Yash mean?
From Sanskrit yashas (यशस्), 'fame, glory, renown, success'. A widely used quality-name meaning 'glory'.
What does Neel mean?
From the Sanskrit नील (nīla), 'dark blue, indigo, sapphire'. A genuine classical colour word, also the root of 'neelam' (sapphire). Note: the similar-looking English/Irish name Neil (from Gaelic Niall) is a separate, unrelated name.