call out vs count off

call out and count off both are verbs.

Word	Noun	Adjective	Verb	Adverb
call out	No	No	Yes	No
count off	No	No	Yes	No

As verbs, count off is a hyponym of call out; that is, count off is a word with a more specific, narrower meaning than call out:

call out: call out loudly, as of names or numbers
count off: call in turn from right to left or from back to front numbers that determine some position or function

call out (verb)	count off (verb)
call out loudly, as of names or numbers	call in turn from right to left or from back to front numbers that determine some position or function
utter aloud; often with surprise, horror, or joy
challenge to a duel