respiration vs bodily function

respiration and bodily function both are nouns.

Word	Noun	Adjective	Verb	Adverb
respiration	Yes	No	No	No
bodily function	Yes	No	No	No

As nouns, bodily function is a hypernym of respiration; that is, bodily function is a word with a broader meaning than respiration:

respiration: the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation
bodily function: an organic process that takes place in the body

Other hypernyms of respiration include activity, bodily process, body process.

As nouns, bodily function is a hypernym of respiration; that is, bodily function is a word with a broader meaning than respiration:

Other hypernyms of respiration include activity, bodily process, body process.

respiration (noun)	bodily function (noun)
the metabolic processes whereby certain organisms obtain energy from organic molecules; processes that take place in the cells and tissues during which energy is released and carbon dioxide is produced and absorbed by the blood to be transported to the lungs	an organic process that takes place in the body
the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation
a single complete act of breathing in and out