As adjectives the difference between solid and coarse
is that
solid is in the state of a solid; not fluid while
coarse is composed of large parts or particles; of inferior quality or appearance; not fine in material or close in texture.
As a noun solid
is a substance in the fundamental state of matter that retains its size and shape without need of a container (as opposed to a liquid or gas).
As an adverb solid
is solidly.
As an acronym SOLID
is acronym of Single responsibility Open-closed, Liskov substitution, Interface segregation and Dependency inversion|lang=en When followed, the created system will be more likely easy to maintain, and extend over time.
