intake vs respiration

intake and respiration both are nouns.

Word	Noun	Adjective	Verb	Adverb
intake	Yes	No	No	No
respiration	Yes	No	No	No

intake (noun)	respiration (noun)
the process of taking food into the body through the mouth (as by eating)	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
the act of inhaling; the drawing in of air (or other gases) as in breathing	the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation
an opening through which fluid is admitted to a tube or container	a single complete act of breathing in and out