islands of Langerhans vs isles of Langerhans

islands of Langerhans and isles of Langerhans both are nouns.

Word	Noun	Adjective	Verb	Adverb
islands of Langerhans	Yes	No	No	No
isles of Langerhans	Yes	No	No	No

As nouns, islands of Langerhans and isles of Langerhans are synonyms defined as:

islands of Langerhans and isles of Langerhans: cell clusters in the pancreas that form the endocrine part of that organ; secrete insulin and other hormones

Other synonyms of islands of Langerhans include islets of Langerhans.

islands of Langerhans (noun)	isles of Langerhans (noun)
cell clusters in the pancreas that form the endocrine part of that organ; secrete insulin and other hormones	cell clusters in the pancreas that form the endocrine part of that organ; secrete insulin and other hormones