The first is minor infringements of God’s laws and the second is more serious infringements like murder or worshipping other gods. Original Sin is the sin all humans are infected with and have inherited from Adam and Eve, the first sinners.
The mental defilements in Buddhism – greed, hatred and delusion, and all their derivatives – meanness and grasping, annoyance and spite, naivety and stupidity, are sometimes called sins, but to do so is inappropriate and misleading.
A sin is thought, speech or action that contravenes God’s laws and for which, in the case of Original Sin, even the descendants of sinners will be punished. There are no equivalents to these ideas in Buddhism.
They are unskilful or inappropriate because they are spawned by negative intentions (greed, hatred and delusion) and have negative consequences (regret, unhappiness, anger, violence, punishment, etc.).