goiter vs American spelling

goiter and American spelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
goiter	Yes	No	No	No
American spelling	Yes	No	No	No

goiter (noun)	American spelling (noun)
abnormally enlarged thyroid gland; can result from underproduction or overproduction of hormone or from a deficiency of iodine in the diet	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')