“Caster” or “Castor”—Which to use?

“Caster” or “Castor”

Overview

caster / castor are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇

Definitions

caster: (noun) a worker who casts molten metal into finished products. (noun) a shaker with a perforated top for sprinkling powdered sugar. (noun) a pivoting roller attached to the bottom of furniture or trucks or portable machines to make them movable.

castor: (noun) a multiple star with 6 components; second brightest in Gemini; close to Pollux. (noun) type genus of the Castoridae: beavers.

Pronunciation

caster: k·AE·s·t·er

castor: k·AE·s·t·er

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Examples in Context

Examples of “caster”

…that when transferred to the caster give full instructions for each…
…better known as "Cynthia Plaster Caster."
…for casting on the monotype caster.
…of gem placed inside the soulcaster determines what the caster can
…the hand movement of the caster (of about a foot) to…
…the first book in the Caster Chronicles series.

Examples of “castor”

It joins Castor Creek to form the Little…
Idas and Lynceus murdered Castor because he and his brother…
Lynceus was the murderer of Castor, along with his brother, Idas.
…twins including a son, Luke Castor Kai Ralli in 2019
Antonius Castor, a botanist at Rome during…
…Idas to spot and kill Castor, and was in turn killed…
Donovan Scott as Castor Oyl
…by Matt Baty and Tommy Castor, for $6.2 million.
…complice (The Forest Accomplice; Le Castor Astral), which contains three stories
…training ship and the icebreaker Castor.

(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)

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