Interrelationship (noun)

1. A relationship between two or more things or individuals.
2. The way in which two or more things are connected or related to each other.

Origin:

From the word inter- meaning between or among and the word relationship, indicating a connection or association between two or more things.

Examples:

1. The interrelationship between the company's sales and its marketing strategy is very important.
2. Scientists are still trying to understand the complex interrelationships between different species in the ecosystem.
3. The interrelationship between our actions and their consequences is very important in ethical decision making.
4. The interrelationship between the economy and politics is a complex one, with each influencing the other.
5. The interrelationship between a person's genes and environment has long been a subject of study in the field of psychology.