secondhand vs old

secondhand is not a noun while old is a noun.

Word	Noun	Adjective	Verb	Adverb
secondhand	No	Yes	No	Yes
old	Yes	Yes	No	No

secondhand (noun)	old (noun)
	past times

secondhand (adjective)	old (adjective)
previously used or owned by another	of long duration; not new
derived from what is primary or original; not firsthand	(used especially of persons) having lived for a relatively long time or attained a specific age
	skilled through long experience
	(used for emphasis) very familiar
	excellent
	just preceding something else in time or order
	belonging to some prior time

secondhand (adverb)	old (adverb)
by indirect means