improvement Definition

1. The act or process of improving; the state of being improved.

Thesaurus: correction, repair, recovery, reform, development, modernization, progress, growth, promotion, increase, regeneration, revision; Antonym: deterioration, decay, retrogression.
2. Something that has been improved or that is considered better than a previous example.

Example: He's a definite improvement on her last boyfriend
3. Something that improves, especially by adding value, beauty, quality, etc.

Example: Their home improvements are very tastefully done