What another word for symbiosis?

There isn't a single perfect synonym for "symbiosis" because it encompasses a broad range of relationships between different species. However, here are some words that capture different aspects of symbiosis, depending on the specific type of relationship:

For mutually beneficial relationships:

* Mutualism: This is the most common synonym for symbiosis, specifically when both organisms benefit.

* Cooperation: This emphasizes the collaborative nature of the relationship.

* Interdependence: This highlights the reliance of each organism on the other.

For relationships where one organism benefits and the other is neither harmed nor helped:

* Commensalism: This describes a relationship where one organism benefits, while the other is unaffected.

For relationships where one organism benefits at the expense of the other:

* Parasitism: This describes a relationship where one organism (the parasite) lives in or on another organism (the host) and benefits at the host's expense.

Other terms:

* Synergism: This emphasizes the combined effect of the two organisms being greater than the sum of their individual parts.

* Coexistence: This describes the fact that the two organisms live together, but doesn't specify the nature of their interaction.

The best word to use depends on the specific context and the type of symbiotic relationship you are describing.