infringement vs foul

infringement and foul both are nouns.

Word	Noun	Adjective	Verb	Adverb
infringement	Yes	No	No	No
foul	Yes	Yes	Yes	No

As nouns, foul is a hyponym of infringement; that is, foul is a word with a more specific, narrower meaning than infringement:

Other hyponyms of infringement include copyright infringement, infringement of copyright, patent infringement.

infringement (noun)	foul (noun)
a crime less serious than a felony	an act that violates the rules of a sport
an act that disregards an agreement or a right

infringement (adjective)	foul (adjective)
	(of a baseball) not hit between the foul lines
	disgustingly dirty; filled or smeared with offensive matter
	characterized by obscenity
	(of a manuscript) defaced with changes
	offensively malodorous
	highly offensive; arousing aversion or disgust
	especially of a ship's lines etc
	violating accepted standards or rules

infringement (verb)	foul (verb)
	become soiled and dirty
	make unclean
	spot, stain, or pollute
	make impure
	commit a foul; break the rules
	hit a foul ball
	become or cause to become obstructed