nourishment vs nutrient

nourishment and nutrient both are nouns.

Word	Noun	Adjective	Verb	Adverb
nourishment	Yes	No	No	No
nutrient	Yes	Yes	No	No

As nouns, nutrient is a hypernym of nourishment; that is, nutrient is a word with a broader meaning than nourishment:

nourishment: a source of materials to nourish the body
nutrient: any substance that can be metabolized by an animal to give energy and build tissue

Other hypernyms of nourishment include food.

nourishment (noun)	nutrient (noun)
the act of nourishing	any substance that can be metabolized by an animal to give energy and build tissue
a source of materials to nourish the body	any substance (such as a chemical element or inorganic compound) that can be taken in by a green plant and used in organic synthesis

nourishment (adjective)	nutrient (adjective)
	of or providing nourishment