Rectify vs Emendation - What's the difference?

As a verb rectify

is to correct or amend something.

the act of altering for the better, or correcting what is erroneous or faulty; correction; improvement.

(en-verb)

To correct or amend something.

(chemistry) To purify or refine, especially by distillation.

(electronics) To convert alternating current into direct current.

(transitive) To produce (as factitious gin or brandy) by redistilling bad wines or strong spirits (whisky, rum, etc.) with flavourings.

(transitive) To adjust (a globe) in order to prepare for the solution of a proposed problem.

* See also

* rectifiable * rectifiably * rectification * rectifier * rectified spirit

(en noun)

The act of altering for the better, or correcting what is erroneous or faulty; correction; improvement.

* 1922, , Vintage Classics, paperback edition, page 157

Then, less melodiously, dissenters of different sects issue a cantankerous emendation .

Alteration by editorial criticism, as of a text so as to give a better reading; removal of errors or corruptions from a document.

The book might be improved by judicious emendations .

revision