The Putnams are a jealous, greedy, vindictive couple. They both have complaints about many of the people in the village. Mr. Putnam will later use his greed to get his daughter to "cry out" against his neighbors so he can get their land. Mrs. Putnam is jealous that Rebecaa Nurse has so many children and grandchildren when only one of her children survived.
Proctor feels Parris is interested only in money and the outward appearance of the church. He tells him he scares people because he preaches hellfire and brimstone every Sunday. Proctor says this is why he doesn't go to church. Proctor sees Mr. Putnam for the greedy man he is, but he can't prove it.
Parris is paranoid about how the congregation feels about him. He knows some of the people don't like him and would use any excuse to get rid of him. Later, Parris gets back at those people, such as Proctor and Giles Corey.
The witch trials becomes trials of revenge so people can get back at their neighbors who have given them a hard time before.