つな繋tsunaがるgaru
1.
To establish a bond or relationship between two or more entities, creating a sense of unity or connection.
2.
To have a direct or indirect relationship or association with something, indicating an interconnectedness.
3.
To come into contact with or be joined to something, allowing for the transfer of information, energy, or influence.
Example:
このシャフトはピストンとつながっている。