choke back vs choke off

choke back and choke off both are verbs.

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

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

Other synonyms of choke back include choke down.

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