improver

1. Someone devoted to the promotion of human welfare and to social reforms (synset 110211232)
   is a type of: benefactor, helper - a person who helps people or institutions (especially with financial help)
   same as: do-gooder, humanitarian
2. A component that is added to something to improve it (synset 102682269)
   "the addition of a bathroom was a major improvement"; "the addition of cinnamon improved the flavor"
   is a type of: component, constituent, element - an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system
   subtypes:

   • additive - something added to enhance food or gasoline or paint or medicine
   • afterthought - an addition that was not included in the original plan
   • annex, annexe, extension, wing - an addition that extends a main building
   • attachment - a supplementary part or accessory
   • elongation, extension - an addition to the length of something
   same as: add-on, addition

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