The answer is Neutralism, amensalism, commensalism, mutualism, and competition.
Neutralism is the most common type of interactions between populations in which neither population affects the other one.
Amensalism is a relationship between two population in which only one of them suffers, and the other one is not affected.
Commensalism is a relationship between two population in which only one of them has benefit, and the other one is not affected.
Mutualism is a relationship between two different populations in which both species benefit.
Competition is an interaction between populations in which they compete for limited resources.