telephone number vs signaling

telephone number and signaling both are nouns.

Word	Noun	Adjective	Verb	Adverb
telephone number	Yes	No	No	No
signaling	Yes	No	No	No

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

Other hypernyms of telephone number include sign, signal, signalling.

telephone number (noun)	signaling (noun)
the number is used in calling a particular telephone	any nonverbal action or gesture that encodes a message