sampling frequency vs oftenness

sampling frequency and oftenness both are nouns.

Word	Noun	Adjective	Verb	Adverb
sampling frequency	Yes	No	No	No
oftenness	Yes	No	No	No

As nouns, oftenness is a hypernym of sampling frequency; that is, oftenness is a word with a broader meaning than sampling frequency:

sampling frequency: (telecommunication) the frequency of sampling a continuously varying signal
oftenness: the number of occurrences within a given time period

Other hypernyms of sampling frequency include frequence, frequency.

sampling frequency (noun)	oftenness (noun)
(telecommunication) the frequency of sampling a continuously varying signal	the number of occurrences within a given time period