Origin: Latin suffix -ment
Improvement has 4 different meanings across 1 category:
a change for the better; progress in development
"After months of practice, she noticed a clear improvement in her piano playing that made her ready for the competition."
a condition superior to an earlier condition
"the new school represents a great improvement"
The act of improving; advancement or growth; a bettering
"The new training program has led to a significant improvement in our team's overall performance."
In plain English: An improvement is a change that makes something better than it was before.
"The new software update brings several improvements to the app's speed and stability."
Usage: Use improvement to describe any positive change, progress, or enhancement in quality or condition. It refers specifically to the result of something becoming better rather than the process of making it so.
The word improvement comes from the Anglo-French term emprouwement. It entered English as a noun form derived from the verb "improve."