metatarsal vein vs foot

metatarsal vein and foot both are nouns.

Word	Noun	Adjective	Verb	Adverb
metatarsal vein	Yes	No	No	No
foot	Yes	No	Yes	No

metatarsal vein (noun)	foot (noun)
dorsal and plantar branches of veins serving the metatarsal region of the foot	travel by walking
	any of various organs of locomotion or attachment in invertebrates
	the pedal extremity of vertebrates other than human beings
	lowest support of a structure
	a support resembling a pedal extremity
	the part of the leg of a human being below the ankle joint
	(prosody) a group of 2 or 3 syllables forming the basic unit of poetic rhythm
	an army unit consisting of soldiers who fight on foot
	the lower part of anything
	a member of a surveillance team who works on foot or rides as a passenger
	a linear unit of length equal to 12 inches or a third of a yard