pocket flap vs pocket

pocket flap and pocket both are nouns.

Word	Noun	Adjective	Verb	Adverb
pocket flap	Yes	No	No	No
pocket	Yes	No	Yes	No

pocket flap (noun)	pocket (noun)
a flap that covers the access to a pocket	a small pouch inside a garment for carrying small articles
	an opening at the corner or on the side of a billiard table into which billiard balls are struck
	(anatomy) saclike structure in any of various animals (as a marsupial or gopher or pelican)
	a small isolated group of people
	a local region of low pressure or descending air that causes a plane to lose height suddenly
	a supply of money
	an enclosed space
	a hollow concave shape made by removing something
	(bowling) the space between the headpin and the pins behind it on the right or left

pocket flap (verb)	pocket (verb)
	put in one's pocket
	take unlawfully