What particle size is generally implied when a geologist uses the term 'grain' instead of 'clast'?

Answer

Sand-sized fragments

While often used interchangeably with clast, the term grain generally implies a smaller particle size, commonly associated with fragments the size of sand.

What particle size is generally implied when a geologist uses the term 'grain' instead of 'clast'?
Geologyrockfragmentstoneparticle