What context can I use each word in?
Learn when and how to use these words with these examples!
cotter
Example
The cotter pin kept the bolt securely in place. [cotter: noun]
Example
He used a cotter to join the two pieces of metal together. [cotter: noun]
fastener
Example
She used a screwdriver to tighten the fastener on the cabinet door. [fastener: noun]
Example
The carpenter used several different types of fasteners to build the bookshelf. [fasteners: noun]
Good things to know
Which word is more common?
Fastener is a more commonly used term than cotter in everyday language, as it is a more general term that covers a wider range of devices used to hold objects together.
What’s the difference in the tone of formality between cotter and fastener?
Both cotter and fastener are technical terms that are commonly used in mechanical and construction contexts, and are therefore generally considered formal language.
