milk vs protein

milk and protein both are nouns.

Word	Noun	Adjective	Verb	Adverb
milk	Yes	No	Yes	No
protein	Yes	No	No	No

milk (noun)	protein (noun)
produced by mammary glands of female mammals for feeding their young	any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repair of tissues; can be obtained from meat and eggs and milk and legumes
a white nutritious liquid secreted by mammals and used as food by human beings
any of several nutritive milklike liquids

milk (verb)	protein (verb)
take milk from female mammals
add milk to
exploit as much as possible