Top
Top noun - A piece placed over an open container to hold in, protect, or conceal its contents.
Upper part and top are semantically related. In some cases you can use "Upper part" instead a noun "Top".
Upper part
Both terms in one sentence
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The bottom is inhabited by Returner sympathizers and thieves, the upper part is patrolled by Imperial soldiers, and the top holds the massive Imperial Palace.
Source: Video Game / Final Fantasy VI -
When the upper part of somebody's buttcrack protrudes above the top of their lower clothing as they bend over, stereotypically associated with plumbers.
Source: Bathroom Tropes -
Think about it, a clock tower on the top right which is first entered by a long corridor, then the clock tower linking to the upper part of the castle, with another identical corridor to start that area off.
Cite this Source
Upper part and Top. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/top/upper_part
Top & Upper part. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/top/upper_part>.
Upper part or Top. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/top/upper_part.
Google Ngram Viewer shows how "top" and "upper part" have occurred on timeline