different between widen vs widener

English

From wide +? -en (verbal suffix).

widen (third-person singular simple present widens, present participle widening, simple past and past participle widened)

(intransitive) To become wide or wider.
(transitive) To make wide or wider.
(transitive) To let out clothes to a larger size.
(transitive) To broaden or extend in scope or range.
(transitive, programming) To convert to a data type that can hold a larger number of distinct values.
Antonym: narrow
to widen a short variable to an int variable

widen +? -er

widener (plural wideners)

Any device used to widen something; especially a drill designed to produce a hole greater than its own diameter.

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