There are a good number of Nepalese scripts that have been used throughout the centuries, so Nepālākṣarā can mean any one of them like Rañjana, Bhujimol, etc. The most commonly used one in the past few centuries is Pracalit, which is indeed sometimes called Newari Script, but I suppose all the others might also be called as such by some. Yes, like all Brāhmī derived scripts, Nepalese scripts are generally written without the breaks between words that one finds in Roman script, for example.