Difference between Carbonyl and Carboxyl

What is the difference between Carbonyl and Carboxyl?

Carbonyl as a noun is in organic chemistry, a divalent functional group, (-co-), characteristic of aldehydes, ketones, carboxylic acids, amides, carboxylic acid anhydrides, carbonyl halides, esters and others. while Carboxyl as a noun is a univalent functional group consisting of a carbonyl and a hydroxyl functional group (-co.oh); characteristic of carboxylic acids.

We hope you now know whether to use Carbonyl or Carboxyl in your sentence.