Side
Side noun - A place, space, or direction away from or beyond a central point or line.
Upper surface and side are semantically related. In some cases you can replace phrase "Upper surface" with "Side", this terms are similar.
Upper surface
Upper surface noun - The side that is uppermost.
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Synonyms for Upper surface
Side and upper surface are semantically related. You can use "Side" instead a noun phrase "Upper surface".
Mutual synonyms
Cite this Source
Upper surface and Side. (2016). Retrieved 2026, July 30, from https://thesaurus.plus/related/side/upper_surface
Side & Upper surface. N.p., 2016. Web. 30 Jul. 2026. <https://thesaurus.plus/related/side/upper_surface>.
Upper surface or Side. 2016. Accessed July 30, 2026. https://thesaurus.plus/related/side/upper_surface.
Google Ngram Viewer shows how "side" and "upper surface" have occurred on timeline