expectoration vs expulsion

expectoration and expulsion both are nouns.

Word	Noun	Adjective	Verb	Adverb
expectoration	Yes	No	No	No
expulsion	Yes	No	No	No

As nouns, expulsion is a hypernym of expectoration; that is, expulsion is a word with a broader meaning than expectoration:

Other hypernyms of expectoration include ejection, forcing out, projection.

expectoration (noun)	expulsion (noun)
the act of spitting (forcefully expelling saliva)	the act of expelling or projecting or ejecting
the process of coughing up and spitting out	the act of forcing out someone or something
	squeezing out by applying pressure