Impossible to answer without a frame of reference.
The male of the species would be a colt.
No, she had no male counterpart.
A counterpart is an opposite number, or an equivalent. She was his counterpart on the opposing team.
Her Roman counterpart would be Juno.
Rhea is a Greek goddess and so has no Greek counterpart. Ops/Opis was the Roman counterpart.
The male counterpart of a nun is a monk.
The female counterpart of patriarch is 'matriarch'.
If it is M. then that is Monsieur; therefore, the counterpart is Mlle.
Venus is Aphrodite's Roman counterpart.
The intrusive counterpart of rhyolite is granite.
Demeter's Roman counterpart is Ceres.
Athena's Roman counterpart is Minerva.