subdue vs choke back

subdue and choke back both are verbs.

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

As verbs, choke back is a hyponym of subdue; that is, choke back is a word with a more specific, narrower meaning than subdue:

subdue (verb)	choke back (verb)
correct by punishment or discipline	suppress
bring under control by force or authority
make subordinate, dependent, or subservient
get on top of; deal with successfully
hold within limits and control
put down by force or intimidation