nonionic vs nonionized

nonionic and nonionized both are adjectives.

Word	Noun	Adjective	Verb	Adverb
nonionic	No	Yes	No	No
nonionized	No	Yes	No	No

As adjectives, nonionic and nonionized are synonyms defined as:

Other synonyms of nonionic include nonionised, unionised, unionized.

nonionic (adjective)	nonionized (adjective)
not converted into ions	not converted into ions
not ionic