umbilical vesicle vs vesicula umbilicus

umbilical vesicle and vesicula umbilicus both are nouns.

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

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

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

Other synonyms of umbilical vesicle include vitelline sac, yolk sac.

umbilical vesicle (noun)	vesicula umbilicus (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