medium vs substance

medium and substance both are nouns.

Word	Noun	Adjective	Verb	Adverb
medium	Yes	Yes	No	No
substance	Yes	No	No	No

As nouns, substance is a hypernym of medium; that is, substance is a word with a broader meaning than medium:

As nouns, substance is a hypernym of medium; that is, substance is a word with a broader meaning than medium:

medium (noun)	substance (noun)
an occupation for which you are especially well suited	the real physical matter of which a person or thing consists
an intervening substance through which signals can travel as a means for communication	a particular kind or species of matter with uniform properties
a means or instrumentality for storing or communicating information	the property of holding together and retaining its shape
(usually plural) transmissions that are disseminated widely to the public	the idea that is intended
the surrounding environment	the choicest or most essential or most vital part of some idea or experience
someone who serves as an intermediary between the living and the dead	content communicating a message; what something is about
a state that is intermediate between extremes; a middle position	considerable capital (wealth or income)
(bacteriology) a nutrient substance (solid or liquid) that is used to cultivate micro-organisms	material of a particular kind or constitution
(biology) a substance in which specimens are preserved or displayed
a liquid with which pigment is mixed by a painter
an intervening substance through which something is achieved

medium (adjective)	substance (adjective)
(meat) cooked until there is just a little pink meat inside
around the middle of a scale of evaluation