Synonyms: add-on, addition, improver
Definition: a component that is added to something to improve it
Usage: the addition of a bathroom was a major improvement; the addition of cinnamon improved the flavor
Similar words: component, element, constituent
Definition: 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
Usage: spare components for cars; a component or constituent element of a system
Synonyms: humanitarian, improver, do-gooder
Definition: someone devoted to the promotion of human welfare and to social reforms
Similar words: benefactor, helper
Definition: a person who helps people or institutions (especially with financial help)