Esters form by a linkage known as an ester bond, important in biology and materials.

Bond Formation

Esters are key in organic chemistry, often as flavoring agents or solvents.

Organic Chemistry

The term 'ester' is used in technical or scientific contexts, not typically in daily conversation.

Technical Vocabulary

 and hexanoic acid blah blah ester come together to make a dry erasable ink except the thing is if you look these ingredients up online you will either find that they have a bajillion listed uses or none now normally this is where I would turn to the scientific community for help but no one seems to be doing a