What words can support a group?

What words can be grouped:

Cardinal,

Central,

Hub,

Pivot,

Dry pivot,

Shu Tian,

Shu Cao,

Speech center,

Close the pivot,

Pivot,

Shufu,

Central minister,

Pivot,

In order to rotate,

Pivot lever,

Pivot wall,

Calculate the pivot,

The second pivot,

Yuanshu,

Pivot,

Shu Xian,

Knob pivot,

The sacred tree,

Fulcrum jun,

Uncle,

Chen Shu,

Xuan Shu,

Disaster fulcrum,

Barrel pivot,

Danshu,

Pivot,

Pivot lever,

Tommy,

Soul pivot,

West fulcrum,

Rope pivot,

God pivot,

Pivot,

Armature,

Shumo