medium vs dissolver

medium and dissolver both are nouns.

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

As nouns, dissolver is a hyponym of medium; that is, dissolver is a word with a more specific, narrower meaning than medium:

Other hyponyms of medium include dissolvent, dissolving agent, resolvent, solvent, de-icer, ice melt, ice melter.

medium (noun)	dissolver (noun)
an occupation for which you are especially well suited	a liquid substance capable of dissolving other substances
an intervening substance through which signals can travel as a means for communication
a means or instrumentality for storing or communicating information
(usually plural) transmissions that are disseminated widely to the public
the surrounding environment
someone who serves as an intermediary between the living and the dead
a state that is intermediate between extremes; a middle position
(bacteriology) a nutrient substance (solid or liquid) that is used to cultivate micro-organisms
(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)	dissolver (adjective)
(meat) cooked until there is just a little pink meat inside
around the middle of a scale of evaluation