threadworm vs pinworm

threadworm and pinworm both are nouns.

Word	Noun	Adjective	Verb	Adverb
threadworm	Yes	No	No	No
pinworm	Yes	No	No	No

As nouns, threadworm and pinworm are synonyms defined as:

threadworm and pinworm: small threadlike worm infesting human intestines and rectum especially in children

Other synonyms of threadworm include Enterobius vermicularis.

threadworm (noun)	pinworm (noun)
small threadlike worm infesting human intestines and rectum especially in children	small threadlike worm infesting human intestines and rectum especially in children