Transfer between banks (5)

I believe the answer is:

ferry

I'm a little stuck... Click here to teach me more about this clue!

'transfer between' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe you can see an association between them that I can't see?

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for ferry that I've seen before include "Regular passenger boat" , "Carry over water" , "Passenger ship travelling regularly over a short distance" , "Boat across e.g. English Channel" , "Boat that provides transport over stretch of water" .)

I've seen this clue in The Guardian, The Globe and Mail and The Telegraph.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.