reprint vs offprint

reprint and offprint both are nouns.

Word	Noun	Adjective	Verb	Adverb
reprint	Yes	No	Yes	No
offprint	Yes	No	No	No

As nouns, reprint and offprint are synonyms defined as:

reprint and offprint: a separately printed article that originally appeared in a larger publication

Other synonyms of reprint include separate.

reprint (noun)	offprint (noun)
a separately printed article that originally appeared in a larger publication	a separately printed article that originally appeared in a larger publication
a publication (such as a book) that is reprinted without changes or editing and offered again for sale

reprint (verb)	offprint (verb)
print anew