old vs secondhand

old is a noun but secondhand is not a noun.

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

old (noun)	secondhand (noun)
past times

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

old (adverb)	secondhand (adverb)
	by indirect means