A Traction

1. The act of pulling something along a surface using motive power.
2. The condition of being so pulled.
3. Grip.
4. The pulling power of an engine or animal.
5. The adhesive friction of a wheel etc on a surface.
6. (usually after forms of gain, get or have) Progress in or momentum toward achieving a goal.

• (business) The extent of adoption of a new product or service, typically measured in number of customers or level of revenue achieved.
• (politics) Popular support.
• (academia) Scholarly interest and research.

7. (medicine) A mechanically applied sustained pull, especially to a limb.
8. (transport) Collectively, the locomotives of a railroad, especially electric locomotives.