Thanks to all contributors, we now have an expanded set of definitions:
Introduction: Process of addition of ducks from external sources.
Induction: Process of addition of ducks from internal sources.
Deduction: Process of removal of ducks.
Reduction: Process of exchange of existing ducks with replacement ducks.
Abduction: Process of pushing ducks away.
Adduction: Process of pulling ducks towards.
Subduction: Process of pulling ducks underneath something (typically water).
Conduction: Process of a duck carrying out a scam on another duck (may involve Seduction).
Seduction: Non-violent courtship routine of some duck species.
Production: Outcome of above if successful.
Transduction: Realisation by a duck of a state of gender dysphoria.
We currently have no Dukes of Edinburgh, York, or Sussex.
I don’t want to alarm anyone but we are again exposed to Viking marauders on the Eastern flank.