recording vs signalling

recording and signalling both are nouns.

Word	Noun	Adjective	Verb	Adverb
recording	Yes	No	No	No
signalling	Yes	No	No	No

As nouns, signalling is a hypernym of recording; that is, signalling is a word with a broader meaning than recording:

recording: a signal that encodes something (e.g., picture or sound) that has been recorded
signalling: any nonverbal action or gesture that encodes a message

Other hypernyms of recording include sign, signal, signaling.

recording (noun)	signalling (noun)
the act of making a record (especially an audio record)	any nonverbal action or gesture that encodes a message
a signal that encodes something (e.g., picture or sound) that has been recorded
a storage device on which information (sounds or images) have been recorded