syncategorem vs syncategorematic

syncategorem is a noun but syncategorematic is not a noun.

Word	Noun	Adjective	Verb	Adverb
syncategorem	Yes	No	No	No
syncategorematic	No	Yes	No	No

syncategorem (noun)	syncategorematic (noun)
a syncategorematic expression; a word that cannot be used alone as a term in a logical proposition

syncategorem (adjective)	syncategorematic (adjective)
	of a term that cannot stand as the subject or (especially) the predicate of a proposition but must be used in conjunction with other terms