different between queening vs facesitting

English

queening

queening (plural queenings)

Any of several kinds of apple.
(chess) The promotion of a lesser piece to a queen.
- 1978, American Statistical Association. Social Statistics Section, Proceedings (part 1, page 536)
  Over 1,200 games were examined in detail and 89 queenings were identified in 70 games.

face +? sitting

facesitting (uncountable)

(BDSM) The sexual practice of sitting on a partner's face to receive cunnilingus or anilingus.

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