adherescence
/ˌæd.hə.rɪˈsɛns/ or /ˌæd.hɛrˈɛs.əns/Definitions
1. noun
The quality or state of adhering or sticking together, often in a mass or group.
“The adherescence of the crowd to the cause was impressive, with thousands attending the rally.”
2. noun
A mass or group of particles or objects that have adhered or stuck together.
“The adherescence of the dust particles on the car’s surface made it difficult to clean.”