I believe they are called “word ladders” [0]. Coincidentally, I was listening to Genesis’s song “Supper’s Ready”, yesterday. It includes 2 word ladders in its

I believe they are called “word ladders” [0]. Coincidentally, I was listening to Genesis’s song “Supper’s Ready”, yesterday. It includes 2 word ladders in its lyrics. Mum to mud to mad to Dad and Dad to dam to dum to Mum https://en.m.wikipedia.org/wiki/Word_ladder https://en.m.wikipedia.org/wiki/Word_ladder