As nouns the difference between behalf and behalves
is that behalf is advantage; favor; stead; benefit; interest; profit; support; defense; vindication while behalves is plural of lang=en.
behalf
English
Noun
(en-noun)
Advantage; favor; stead; benefit; interest; profit; support; defense; vindication.
Derived terms
* on behalf of
behalves
English
Noun
(head)
Usage notes
* This is used only with a plural, as in (term) or (term) (with (the) as in that example).