Uncapitalize vs. Decapitalize — What's the Difference?

Difference Between Uncapitalize and Decapitalize

(transitive) To convert the first letter (or more) of (something) from uppercase to lowercase; to make uncapitalized.

(transitive) To uncapitalize convert the first letter (or more) of (something) from uppercase to lowercase

To convert a capital value, typically into a rental

To remove (something's) status as a capital crime; to cause (something) to no longer be a capital crime.