tap-off vs tip-off

tap-off and tip-off both are nouns.

Word	Noun	Adjective	Verb	Adverb
tap-off	Yes	No	No	No
tip-off	Yes	No	No	No

As nouns, tap-off and tip-off are synonyms defined as:

tap-off and tip-off: the act of starting a basketball game with a jump ball

tap-off (noun)	tip-off (noun)
the act of starting a basketball game with a jump ball	the act of starting a basketball game with a jump ball
	inside information that something is going to happen