dissimilation vs dissimilate

dissimilation is a noun but dissimilate is not a noun.

Word	Noun	Adjective	Verb	Adverb
dissimilation	Yes	No	No	No
dissimilate	No	No	Yes	No

dissimilation (noun)	dissimilate (noun)
breakdown in living organisms of more complex substances into simpler ones together with release of energy
a linguistic process by which one of two similar sounds in a word becomes less like the other

dissimilation (verb)	dissimilate (verb)
	become dissimilar or less similar
	make dissimilar; cause to become less similar
	become dissimilar by changing the sound qualities