Excretory
Part of speech: adjective
Definition: of, or relating to excretion
Expelling
Part of speech: verb
Definition: To eject or erupt.
Part of speech: noun
Definition: The action of the verb expel.
Excretory as an adjective is of, or relating to excretion while Expelling as a verb is to eject or erupt.
Part of speech: adjective
Definition: of, or relating to excretion
Part of speech: verb
Definition: To eject or erupt.
Part of speech: noun
Definition: The action of the verb expel.
We hope you now know whether to use Excretory or Expelling in your sentence.