chasse (n.)youdaoicibaDictYouDict[chasse 词源字典]
from French chassé "chase, chasing," past participle of chasser "to chase, hunt" (see chase (v.)); borrowed 19c. in a variety of senses and expressions, such as "chaser" (in the drinking sense), short for chasse-café, literally "coffee-chaser." Also as a dance step (1867).[chasse etymology, chasse origin, 英语词源]
position (n.)youdaoicibaDictYouDict
late 14c., as a term in logic and philosophy, from Old French posicion "position, supposition" (Modern French position), from Latin positionem (nominative positio) "act or fact of placing, situation, position, affirmation," noun of state from past participle stem of ponere "put, place," from PIE *po-s(i)nere, from *apo- "off, away" (see apo-) + *sinere "to leave, let" (see site).

Meaning "proper place occupied by a person or thing" is from 1540s. Meaning "manner in which some physical thing is arranged or posed" first recorded 1703; specifically in reference to dance steps, 1778, sexual intercourse, 1883. Meaning "official station, employment" is from 1890.