In his first impeachment he was indicted for
abuse of power and
obstruction of Congress.
In his second impeachment he was indicted with "incitement of insurrection" in urging his supporters to march on the Capitol building. In his current Georgia trial, he was charged with violation of the Rico statue by pressure state officials to change the certified vote count.
The only similarity is that in each incident, Trump violates the law or the constitution in order to accomplish his goal which is what he has done throughout his life. He does as he pleases and the laws be dammed and his followers love him for it.