Extra
Extra noun - An interchangeable part or piece of equipment that is kept on hand for replacement of an original.
Supplementary component and extra are semantically related. In some cases you can use "Supplementary component" instead a noun "Extra".
Supplementary component
Extra and supplementary component are semantically related. You can use "Extra" instead a noun phrase "Supplementary component".
Mutual synonyms
Cite this Source
Supplementary component and Extra. (2016). Retrieved 2026, August 08, from https://thesaurus.plus/related/extra/supplementary_component
Extra & Supplementary component. N.p., 2016. Web. 08 Aug. 2026. <https://thesaurus.plus/related/extra/supplementary_component>.
Supplementary component or Extra. 2016. Accessed August 08, 2026. https://thesaurus.plus/related/extra/supplementary_component.
Google Ngram Viewer shows how "extra" and "supplementary component" have occurred on timeline