concrete

Concrete comes from Latin concrētus, the past participle of concrescō, meaning "to curdle" or grow together, formed from con- (with, together) and crescō (to grow, rise).

The Latin sense of things thickening or growing together as one mass gave English a word for what is solid, particular, and real rather than abstract.

It shares its root crescō with any word built on the idea of growth, since con- simply adds the sense of "together" to that growing.