goiter vs struma

goiter and struma both are nouns.

Word	Noun	Adjective	Verb	Adverb
goiter	Yes	No	No	No
struma	Yes	No	No	No

As nouns, goiter and struma are synonyms defined as:

goiter and struma: abnormally enlarged thyroid gland; can result from underproduction or overproduction of hormone or from a deficiency of iodine in the diet

Other synonyms of goiter include goitre, thyromegaly.

goiter (noun)	struma (noun)
abnormally enlarged thyroid gland; can result from underproduction or overproduction of hormone or from a deficiency of iodine in the diet	abnormally enlarged thyroid gland; can result from underproduction or overproduction of hormone or from a deficiency of iodine in the diet
	a form of tuberculosis characterized by swellings of the lymphatic glands