Solutions Stair post has 18 entries with similar clues

• 4-letter words
• rampaccessible alternative to stairs
• stepPart of a stairway
• 5-letter words
• stepsstairs
• riserStair part
• 6-letter words
• newelsstair posts
• treadsStair parts
• winderStep in a winding staircase
• 7-letter words
• landingA level area at the top of a staircase
• artistspainters renovate stairs – about time!
• 8-letter words
• doorstepThreshold stair
• banisterStaircase adjunct
• 9-letter words
• escalatorMoving stairway/staircase
• banistersStair railings
• 10-letter words
• newel-postPost supporting the handrail at either end of a flight of stairs
• balustradeRailing on stairs or balcony
• 11-letter words
• taketheliftdon't use the stairs when hitchhiking
• 12-letter words
• companionwayStaircase on a ship
• 13-letter words
• rhyming-slangApples and pears for stairs, for example