shut off vs block off

shut off and block off both are verbs.

Word	Noun	Adjective	Verb	Adverb
shut off	No	No	Yes	No
block off	No	No	Yes	No

As verbs, shut off and block off are synonyms defined as:

Other synonyms of shut off include close off.

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

Other hypernyms of shut off include bar, barricade, block, block up, blockade, stop.

shut off (verb)	block off (verb)
block off the passage through	obstruct access to
isolate or separate	render unsuitable for passage
stem the flow of	block off the passage through