smuggler vs felon

smuggler and felon both are nouns.

Word	Noun	Adjective	Verb	Adverb
smuggler	Yes	No	No	No
felon	Yes	No	No	No

As nouns, felon is a hypernym of smuggler; that is, felon is a word with a broader meaning than smuggler:

smuggler: someone who imports or exports without paying duties
felon: someone who has committed a crime or has been legally convicted of a crime

Other hypernyms of smuggler include criminal, crook, malefactor, outlaw.

smuggler (noun)	felon (noun)
someone who imports or exports without paying duties	someone who has committed a crime or has been legally convicted of a crime
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