sampling frequency vs frequency

sampling frequency and frequency both are nouns.

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

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

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

Other hypernyms of sampling frequency include frequence, oftenness.

sampling frequency (noun)	frequency (noun)
(telecommunication) the frequency of sampling a continuously varying signal	the number of observations in a given statistical category
	the ratio of the number of observations in a statistical category to the total number of observations
	the number of occurrences within a given time period