felony vs seizure

felony and seizure both are nouns.

Word	Noun	Adjective	Verb	Adverb
felony	Yes	No	No	No
seizure	Yes	No	No	No

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

felony (noun)	seizure (noun)
a serious crime (such as murder or arson)	the taking possession of something by legal process
	the act of forcibly dispossessing an owner of property
	the act of taking of a person by force
	a sudden occurrence (or recurrence) of a disease