psychoanalysis (as a field of study)
Refers to the academic discipline or theoretical study of psychoanalysis, as opposed to clinical practice. Often used in university course names or research contexts.
He is majoring in psychoanalysis at university.
I attended a lecture on the history of psychoanalysis.
精神分析 refers to psychoanalysis as a therapeutic method or practice, while 精神分析学 specifically denotes the academic study or discipline.
Compound of 精神 (mind, psyche), 分析 (analysis), and 学 (study, -ology). A calque from German Psychoanalyse or English psychoanalysis.