* Connection: This is the most common and general noun form. It refers to the state of being connected or the act of connecting.
* Connective: This noun refers to something that connects or joins things together. It can be used in a more technical sense, like a connective tissue in biology.
* Link: This noun emphasizes the relationship or association between things. It implies a direct and specific connection.
* Interface: This noun refers to a point of interaction or communication between two systems or entities.
* Junction: This noun refers to a point where two or more things join or meet, often used in a physical sense.
The best noun form to use depends on the specific context and meaning you want to convey.