What accusation does Giles Corey make against Thomas Putnam?

Giles Corey accuses Thomas Putnam of using the witch trials to his advantage by accusing his neighbors of witchcraft in order to acquire their land. This accusation highlights the themes of greed and corruption that run through Arthur Miller's play, as characters exploit the chaos of the trials for personal gain. Corey believes that Putnam's motivations are not based on a genuine belief in witchcraft, but rather on a calculated desire to enrich himself by taking over the property of those who are accused and executed. This accusation serves to illustrate the moral degradation that results from the hysteria of the witch trials and emphasizes how personal vendettas and selfish motives can corrupt society.