Books
Serials
Mutual synonyms
Both words in one sentence
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If you count their appearances in books and serials prior to 2008, the Toa Nuva and their Adaptive Armor.
Source: Toys / BIONICLE - BIONICLE had several, but mostly in web serials and books, so it was up to your imagination to picture them.
Source: Family Unfriendly Death / Other -
Halo spawns not only games, but books, comics, graphic novels, movies, an anime, action figures, controllers, consoles, live-action serials, a Mountain Dew flavor, and much more.
Source: Cash Cow Franchise
Cite this Source
Serials and Books. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/books/serials
Books & Serials. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/books/serials>.
Serials or Books. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/books/serials.
Google Ngram Viewer shows how "books" and "serials" have occurred on timeline