1) Alexander, to aristotle 2) Apprentice 3) Assimilator 4) Candide, to Pangloss 5) Customer seen privately 6) Eliza Doolittle in Pygmalion 7) Eliza Doolittle, famously 8) Homebound student 9) Homebound student, often 10) Learner 11) Learns from a tutor 12) Lone learner 13) One getting instruction 14) One getting private lessons 1) Protege 
[n] - learns from a tutor
noun learns from a tutor
a person who is being tutored; the pupil of a tutor.