Building block
Building block noun - One of the parts that make up a whole.
Extra and building block are semantically related. In some cases you can use "Extra" instead a noun phrase "Building block".
Extra
Extra noun - An interchangeable part or piece of equipment that is kept on hand for replacement of an original.
Building block and extra are semantically related. Sometimes you can use "Building block" instead a noun "Extra".
Mutual synonyms
Cite this Source
Extra and Building block. (2016). Retrieved 2026, August 12, from https://thesaurus.plus/related/building_block/extra
Building block & Extra. N.p., 2016. Web. 12 Aug. 2026. <https://thesaurus.plus/related/building_block/extra>.
Extra or Building block. 2016. Accessed August 12, 2026. https://thesaurus.plus/related/building_block/extra.
Google Ngram Viewer shows how "building block" and "extra" have occurred on timeline