umbilical cord vs canal

umbilical cord and canal both are nouns.

Word	Noun	Adjective	Verb	Adverb
umbilical cord	Yes	No	No	No
canal	Yes	No	Yes	No

As nouns, canal is a hypernym of umbilical cord; that is, canal is a word with a broader meaning than umbilical cord:

umbilical cord: membranous duct connecting the fetus with the placenta
canal: a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance

Other hypernyms of umbilical cord include channel, duct, epithelial duct, funiculus, fetal membrane.

umbilical cord (noun)	canal (noun)
membranous duct connecting the fetus with the placenta	long and narrow strip of water made for boats or for irrigation
	a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance
	(astronomy) an indistinct surface feature of Mars once thought to be a system of channels; they are now believed to be an optical illusion

umbilical cord (verb)	canal (verb)
	provide (a city) with a canal