transfer vs carry over

transfer is a noun but carry over is not a noun.

Word	Noun	Adjective	Verb	Adverb
transfer	Yes	No	Yes	No
carry over	No	No	Yes	No

As verbs, carry over is a hyponym of transfer; that is, carry over is a word with a more specific, narrower meaning than transfer:

Other hyponyms of transfer include transpose, shunt, carry, shuffle, transship, bunker, carry forward, remove, transfer, translocate.

transfer (noun)	carry over (noun)
the act of moving something from one location to another
transferring ownership
the act of transferring something from one form to another
application of a skill learned in one situation to a different but similar situation
a ticket that allows a passenger to change conveyances
someone who transfers or is transferred from one position to another

transfer (verb)	carry over (verb)
transfer from one place or period to another	transfer or persist from one stage or sphere of activity to another
send from one person or place to another	transfer from one time period to the next
move around	transport from one place or state to another
shift the position or location of, as for business, legal, educational, or military purposes	hold over goods to be sold for the next season
change from one vehicle or transportation line to another
lift and reset in another soil or situation
cause to change ownership
move from one place to another
transfer somebody to a different position or location of work