Improver has 3 different meanings across 1 category:
Noun
Noun
1
someone devoted to the promotion of human welfare and to social reforms
2
a component that is added to something to improve it
"the addition of a bathroom was a major improvement"
"the addition of cinnamon improved the flavor"
3
Something that, or someone who, improves something.
Broader Terms (hypernyms)
Narrower Terms (hyponyms)