different between abatable vs batable

English

abate +? -able

abatable (comparative more abatable, superlative most abatable)

Capable of being abated. [First attested from 1350 to 1470.]
an abatable writ or nuisance.

Abbreviated form of debatable.

batable (comparative more batable, superlative most batable)

(obsolete) disputable
The border land between England and Scotland, being formerly a subject of contention, was called "batable ground".

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