MSG vs seasoning

MSG and seasoning both are nouns.

Word	Noun	Adjective	Verb	Adverb
MSG	Yes	No	No	No
seasoning	Yes	No	No	No

As nouns, seasoning is a hypernym of MSG; that is, seasoning is a word with a broader meaning than MSG:

MSG: white crystalline compound used as a food additive to enhance flavor; often used in Chinese cooking
seasoning: something added to food primarily for the savor it imparts

Other hypernyms of MSG include flavorer, flavoring, flavourer, flavouring, seasoner.

MSG (noun)	seasoning (noun)
white crystalline compound used as a food additive to enhance flavor; often used in Chinese cooking	the act of adding a seasoning to food
	something added to food primarily for the savor it imparts