|-- both species benefit|
|-- one species benefits, the other is unaffected|
|-- one species benefits, the other is harmed|
|-- neither species benefits|
|-- both species are unaffected|
My relationship with the birds I feed is Mutual - they eat, I enjoy watching them
When I eat fish from the lake here it is Parasitism.
When a mouse invades my house, it is Parasitism.