vesicula umbilicus vs umbilical vesicle

vesicula umbilicus and umbilical vesicle both are nouns.

Word	Noun	Adjective	Verb	Adverb
vesicula umbilicus	Yes	No	No	No
umbilical vesicle	Yes	No	No	No

As nouns, vesicula umbilicus and umbilical vesicle are synonyms defined as:

vesicula umbilicus and umbilical vesicle: membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional

Other synonyms of vesicula umbilicus include vitelline sac, yolk sac.

vesicula umbilicus (noun)	umbilical vesicle (noun)
membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional	membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional