to study / to learn

doctor

medicine (field of study)

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

quack doctor

(medicine) geriatrics (branch of medicine dealing with the elderly)

medically, (from) a medical standpoint

medical student; medical intern