expropriation vs confiscation

expropriation and confiscation both are nouns.

Word	Noun	Adjective	Verb	Adverb
expropriation	Yes	No	No	No
confiscation	Yes	No	No	No

As nouns, confiscation is a hypernym of expropriation; that is, confiscation is a word with a broader meaning than expropriation:

expropriation: taking out of an owner's hands (especially taking property by public authority)
confiscation: seizure by the government

Other hypernyms of expropriation include arrogation.

expropriation (noun)	confiscation (noun)
taking out of an owner's hands (especially taking property by public authority)	seizure by the government