categorem vs categorematic

categorem is a noun but categorematic is not a noun.

Word	Noun	Adjective	Verb	Adverb
categorem	Yes	No	No	No
categorematic	No	Yes	No	No

categorem (noun)	categorematic (noun)
a categorematic expression; a term capable of standing alone as the subject or predicate of a logical proposition

categorem (adjective)	categorematic (adjective)
	of a term or phrase capable of standing as the subject or (especially) the predicate of a proposition