choke off vs choke back

choke off and choke back both are verbs.

Word	Noun	Adjective	Verb	Adverb
choke off	No	No	Yes	No
choke back	No	No	Yes	No

As verbs, choke off and choke back are synonyms defined as:

Other synonyms of choke off include choke down.

choke off (verb)	choke back (verb)
suppress	suppress
become or cause to become obstructed