According to The **N**ew **Fowler** Modern English Usage -

> "abolishment and abolition" both entered the language in the 16c. For
> two centuries they coexisted as synonyms (used of sins, faith, guilt,
> and other abstract concepts) with approximately equal currency.
> 
> The choice of **abolition** by those working for the **abandonment**, first of
> *slavery*, and then of *capital punishment*, ensured the relative
> supremacy of this member of the pair.

- Contextual needs, however, still leave
room for abolishment to be used with fair
frequency.


![Usage examples][1]

 


  [1]: https://i.sstatic.net/D6fea.jpg