time signal vs signaling

time signal and signaling both are nouns.

Word	Noun	Adjective	Verb	Adverb
time signal	Yes	No	No	No
signaling	Yes	No	No	No

As nouns, signaling is a hypernym of time signal; that is, signaling is a word with a broader meaning than time signal:

time signal: a signal (especially electronic or by radio) indicating the precisely correct time
signaling: any nonverbal action or gesture that encodes a message

Other hypernyms of time signal include sign, signal, signalling.

time signal (noun)	signaling (noun)
a signal (especially electronic or by radio) indicating the precisely correct time	any nonverbal action or gesture that encodes a message