1. Quick learner.
2. Wiki learner
3. Rapid learner.
A synonym for "very fast" is quick.
quick, speedy, at once
Learner is the correct spelling.
Collective nouns are words to group a like nouns. Collective nouns are not used for the actions of a noun, such a air. Perhaps you were thinking of a synonym (a word that means the same thing) for the term 'air being fast'; a synonym might be 'wind'.
A synonym is a word that shares the same meaning as a different word. Example: Planes are big; Planes are large.
pupil
pupil
A quick learner or a fast learner.
You may be asked in an interview to give an example where you are a fast learner. This is designed to tell a potential employer how you see yourself as picking up new skills.
A synonym for "very fast" is quick.
Pupil or Scholar are a few.pupil
beginner, learner, recruit, apprentice, nonprofessional, novice
Slow and fast are antonyms; a synonym is a word with a similar meaning.
Adaptable
The ability to grasp new concepts quickly = fast learner
Someone who is a fast learner and catches on to things fast
A learner driver has the same speed restrictions as any other road user.