seal off vs circumvent

seal off and circumvent both are verbs.

Word	Noun	Adjective	Verb	Adverb
seal off	No	No	Yes	No
circumvent	No	No	Yes	No

As verbs, circumvent is a hypernym of seal off; that is, circumvent is a word with a broader meaning than seal off:

Other hypernyms of seal off include beleaguer, besiege, hem in, surround.

seal off (verb)	circumvent (verb)
impose a blockade on	avoid or try to avoid fulfilling, answering, or performing (duties, questions, or issues)
make tight; secure against leakage	beat through cleverness and wit
	surround so as to force to give up