Newbie
Part of speech: noun
Definition: A newcomer, someone new to something. A new user or participant; someone who is extremely new and inexperienced (to a game or activity).
Neophyte
Part of speech: noun
Definition: A beginner.A novice (recent convert), a new convert or proselyte.A name given by the early Christians, and still given by the Roman Catholics, to those who have recently embraced the Christian faith, and been admitted to baptism, especially those converts from heathenism or Judaism.A plant species recently introduced to an area (in contrast to archaeophyte, a long-established introduced species).