nexus

noun

1. (countable, uncountable)A form or state of connection.
2. (Canada, US, countable, uncountable)A form or state of connection.
3. (countable, uncountable)A connected group; a network, a web.

   “Sunday's election pits Move Forward and the billionaire Shinawatra family's Pheu Thai against ruling parties backed by a nexus of old money, conservatives and generals with influence over key institutions involved in two decades of upheaval in Southeast Asia's second-biggest economy.”

4. (countable, uncountable)A centre or focus of something.

   “More than just a corporate juggernaut, Nvidia also has become an instrument of statecraft, operating at the nexus of advanced technology, diplomacy, and geopolitics.”

5. (countable, uncountable)In the work of the Danish linguist Otto Jespersen (1860–1943): a group of words expressing two concepts in one unit (such as a clause or sentence).
6. (Ancient-Rome, countable, historical, uncountable)A person who had contracted a nexum or obligation of such a kind that, if they failed to pay, their creditor could compel them to work as a servant until the debt was paid; an indentured servant.