Hi, Anton Shepelev!
I read your message from 07.03.2022 16:55

  ??>>> Interesting too, that we sit IN a chair, but ON a
  ??>> >stool.:-)
  AS> Small wonder that we do, for the sitter in a chair is
  AS> enclosed on three sides with the backrest and armrests --
  AS> parts that raise above the seat.

It is an armchair has it, not a chair.

https://en.wikipedia.org/wiki/Chair

Bye, Anton!
Alexander Koryagin
fido.english_tutor 2022
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