combining form vs odd

combining form is a noun but odd is not a noun.

Word	Noun	Adjective	Verb	Adverb
combining form	Yes	No	No	No
odd	No	Yes	No	No

combining form (noun)	odd (noun)
a bound form used only in compounds

combining form (adjective)	odd (adjective)
	not divisible by two
	an indefinite quantity more than that specified
	of the remaining member of a pair
	beyond or deviating from the usual or expected
	not used up
	not easily explained