What context can I use each word in?
Learn when and how to use these words with these examples!
spider
Example
I saw a spider crawling on the wall. [spider: noun]
Example
The spider spun a web to catch its prey. [spun: past tense verb]
Example
Be careful not to get bitten by a poisonous spider. [spider: adjective]
arachnid
Example
Arachnids are fascinating creatures with many unique features. [arachnid: noun]
Example
Some arachnids use silk to create nests or cocoons for their eggs. [arachnids: plural noun]
Example
The exoskeleton of arachnids provides protection and support. [arachnid: adjective]
Good things to know
Which word is more common?
Spider is more commonly used than arachnid in everyday language, as it is a more specific term that people are familiar with. However, arachnid is commonly used in scientific contexts to refer to the larger class of joint-legged invertebrates.
What’s the difference in the tone of formality between spider and arachnid?
Arachnid is a more formal term than spider, as it is commonly used in scientific contexts. However, both words can be used in both formal and informal contexts depending on the situation.