different between tumbledown vs rolldown

English

tumble +? down

tumbledown (comparative more tumbledown, superlative most tumbledown)

in disrepair; poorly maintained
They lived in a tumbledown shack on the edge of the woods.

roll +? down

rolldown (not comparable)

Capable of being rolled down.
- 1992, Aras Ören, Please, no police
  Then he rolled down the wooden blinds inside, opened the door and pulled halfway down the metal rolldown shutter outside.

rolldown (plural rolldowns)

(pinball, often attributive) An older form of pinball where the player rolls a ball manually down the table rather than propelling it onto the table with a plunger.
- 1948, Billboard (24 January 1948, page 76)
  New rolldown uses pinball-size balls and, except for the fact that the game has the conventional open rolldown table end and does not use a plunger, the game's playing surface resembles the pinball variation of Bermuda.
- 1949, Billboard (volume 61, page 82)
  Attracted by game operation, many invested heavily in pins and rolldowns prior to last spring.

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