If your question pertains to The Crucible, then Abigail would have been John Proctor's help or the help for his wife around their house. Abigail and John Proctor seemingly had a relationship that he eventually wanted to end,but Abigail did not.
The Crucible, Act II: Elizabeth asks Proctor to speak to Abigail and tell her that no chance exists of him marrying her if anything happens to his wife.Hale asks Proctor to testify in court and then questions Elizabeth to find out if she believes in witches. Giles Corey and Francis Nurse arrive and tell Proctor, Hale and Elizabeth that the court has arrested both of their wives for witchcraft.
Competition is another relationship that exists between organisms
What type of relationship exists between the crocodile and anaconda
competition
parasitism
they have intercourse
It is a symbiotic relationship.
commensalism
The cat is the predator and the mouse is the prey.
No particular relationship exists between the two for the simple reason that such relationship(if any exist) depends on the material one is concerned with.
The relationship between the clownfish and the sea anemone is mutualistic.
A relationship between variables