As nouns the difference between counterclaim and counterargument
is that counterclaim is (legal) a suit filed by a defendant against a plaintiff secondary to the original complaint while counterargument is an argument that is opposed to another argument.
As a verb counterclaim
is to file a counterclaim.
counterclaim
Noun
(
en noun)
(legal) a suit filed by a defendant against a plaintiff secondary to the original complaint.
Verb
(
en verb)
To file a counterclaim.