radial pulse vs heart rate

radial pulse and heart rate both are nouns.

Word	Noun	Adjective	Verb	Adverb
radial pulse	Yes	No	No	No
heart rate	Yes	No	No	No

As nouns, heart rate is a hypernym of radial pulse; that is, heart rate is a word with a broader meaning than radial pulse:

radial pulse: pulse of the radial artery (felt in the wrist)
heart rate: the rate at which the heart beats; usually measured to obtain a quick evaluation of a person's health

Other hypernyms of radial pulse include pulse, pulse rate.

radial pulse (noun)	heart rate (noun)
pulse of the radial artery (felt in the wrist)	the rate at which the heart beats; usually measured to obtain a quick evaluation of a person's health