What is the difference between ester and amide?

Esters are compounds formed from the reaction between a carboxylic acid and an alcohol, while amides are compounds formed from the reaction between a carboxylic acid and an amine. Esters have a carbonyl group bonded to an oxygen atom, while amides have a carbonyl group bonded to a nitrogen atom. Additionally, amides typically have higher boiling points and melting points compared to esters due to stronger intermolecular interactions in amides.