spider vs spidery

spider is a noun but spidery is not a noun.

Word	Noun	Adjective	Verb	Adverb
spider	Yes	No	No	No
spidery	No	Yes	No	No

spider (noun)	spidery (noun)
predatory arachnid with eight legs, two poison fangs, two feelers, and usually two silk-spinning organs at the back end of the body; they spin silk to make cocoons for eggs or traps for prey
a skillet made of cast iron
a computer program that prowls the internet looking for publicly accessible resources that can be added to a database; the database can then be searched with a search engine

spider (adjective)	spidery (adjective)
	relating to or resembling a member of the class Arachnida