potable vs nutrient

potable and nutrient both are nouns.

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

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

potable: any liquid suitable for drinking
nutrient: any substance that can be metabolized by an animal to give energy and build tissue

Other hypernyms of potable include food, liquid.

potable (noun)	nutrient (noun)
any liquid suitable for drinking	any substance that can be metabolized by an animal to give energy and build tissue
	any substance (such as a chemical element or inorganic compound) that can be taken in by a green plant and used in organic synthesis

potable (adjective)	nutrient (adjective)
suitable for drinking	of or providing nourishment