respiration vs intake

respiration and intake both are nouns.

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

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