A newb or newbie; refers to the idea that someone is new to a game, concept, or idea; implying a lack of experience. Also, in some areas the word noob can mean someone is obsessed with things.
Specialised, involving detailed knowledge of a restricted topic.
A stenotopic species.
A physician whose practice is limited to a particular branch of medicine or surgery.
Someone who is an expert in, or devoted to, some specific branch of study or research.
Any of several non-commissioned ranks corresponding to that of corporal.
An organism that is specialized for a particular environment.