jam vs block

jam and block both are nouns.

Word	Noun	Adjective	Verb	Adverb
jam	Yes	No	Yes	No
block	Yes	No	Yes	No

As verbs, jam and block are synonyms defined as:

As verbs, jam and block are synonyms defined as:

Other synonyms of jam include close up, impede, obstruct, obturate, occlude.

As verbs, block is a hyponym of jam; that is, block is a word with a more specific, narrower meaning than jam:

jam (noun)	block (noun)
deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems	the act of obstructing or deflecting someone's movements
preserve of crushed fruit	a solid piece of something (usually having flat rectangular sides)
a dense crowd of people	an obstruction in a pipe or tube
informal terms for a difficult situation	a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope
	a metal casting containing the cylinders and cooling ducts of an engine
	a platform from which an auctioneer sells
	housing in a large building that is divided into separate units
	an inability to remember or think of something you normally can do; often caused by emotional tension
	a number or quantity of related things dealt with as a unit
	a rectangular area in a city surrounded by streets and usually containing several buildings
	(computer science) a sector or group of sectors that function as the smallest data unit permitted
	a three-dimensional shape with six square or rectangular sides

jam (verb)	block (verb)
interfere with or prevent the reception of signals	shape into a block or blocks
crowd or pack to capacity	shape by using a block
get stuck and immobilized	prohibit the conversion or use of (assets)
block passage through	be unable to remember
crush or bruise	interfere with or prevent the reception of signals
press tightly together or cram	impede the movement of (an opponent or a ball)
push down forcibly	render unsuitable for passage
	obstruct
	stamp or emboss a title or design on a book with a block
	support, secure, or raise with a block
	block passage through
	shut out from view or get in the way so as to hide from sight
	interrupt the normal function of by means of anesthesia
	hinder or prevent the progress or accomplishment of
	stop from happening or developing
	run on a block system