overprint vs print over

overprint is a noun but print over is not a noun.

Word	Noun	Adjective	Verb	Adverb
overprint	Yes	No	Yes	No
print over	No	No	Yes	No

As verbs, overprint and print over are synonyms defined as:

overprint and print over: print (additional text or colors) onto an already imprinted paper

overprint (noun)	print over (noun)
something added by overprinting

overprint (verb)	print over (verb)
print (additional text or colors) onto an already imprinted paper	print (additional text or colors) onto an already imprinted paper