compulsion (n.)youdaoicibaDictYouDict[compulsion 词源字典]
early 15c., from Middle French compulsion, from Latin compulsionem (nominative compulsio) "a driving, urging," noun of action from past participle stem of compellere "compel" (see compel). Psychological sense is from 1909 in A.A. Brill's translation of Freud's "Selected Papers on Hysteria," where German Zwangsneurose is rendered as compulsion neurosis.[compulsion etymology, compulsion origin, 英语词源]
libido (n.)youdaoicibaDictYouDict
"psychic drive or energy, usually associated with sexual instinct," 1892, carried over untranslated in English edition of Krafft-Ebing's "Psychopathia Sexualis"; and used in 1909 in A.A. Brill's translation of Freud's "Selected Papers on Hysteria" (Freud's use of the term led to its popularity); from Latin libido "desire, lust," from libere "to be pleasing, to please," ultimately cognate with Old English lufu (see love (n.)).