shoe string vs shoe

shoe string and shoe both are nouns.

Word	Noun	Adjective	Verb	Adverb
shoe string	Yes	No	No	No
shoe	Yes	No	Yes	No

shoe string (noun)	shoe (noun)
a lace used for fastening shoes	footwear shaped to fit the foot (below the ankle) with a flexible upper of leather or plastic and a sole and heel of heavier material
a small amount of money	U-shaped plate nailed to underside of horse's hoof
	a restraint provided when the brake linings are moved hydraulically against the brake drum to retard the wheel's rotation
	(card games) a case from which playing cards are dealt one at a time

shoe string (verb)	shoe (verb)
	furnish with shoes