Castle
Castle noun - A large impressive residence.
Usage example: the mining tycoon built a magnificent castle on the hill overlooking the town
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Synonyms for Castle
Penthouse and castle are semantically related. In some cases you can use "Penthouse" instead a noun "Castle".
Penthouse
Penthouse noun - A smaller structure added to a main building.
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Synonyms for Penthouse
Mutual synonyms
Both words in one sentence
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Castle, being a famous bestselling author of over 20 novels as well as being well-known in New York's elite and upper-class circles, can easily afford his spacious penthouse.
Source: "Friends" Rent Control
Cite this Source
Penthouse and Castle. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/castle/penthouse
Castle & Penthouse. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/castle/penthouse>.
Penthouse or Castle. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/castle/penthouse.
Google Ngram Viewer shows how "castle" and "penthouse" have occurred on timeline