galactosis vs secretion

galactosis and secretion both are nouns.

Word	Noun	Adjective	Verb	Adverb
galactosis	Yes	No	No	No
secretion	Yes	No	No	No

As nouns, secretion is a hypernym of galactosis; that is, secretion is a word with a broader meaning than galactosis:

Other hypernyms of galactosis include secernment.

galactosis (noun)	secretion (noun)
the secretion of milk	a functionally specialized substance (especially one that is not a waste) released from a gland or cell
	the organic process of synthesizing and releasing some substance