The term 'great number' can be used to describe a large quantity of something, and this is reflected in the crossword solutions given. A GROUP is a collection of people, a RAFT is a type of boat, an ARMY is a large military force, a MYRIAD is an extremely large number, a LOT is a large amount, MANY is a large quantity, a LEGION is a large military force, a SLEW is a large number, a HOST is a large number, LOTS is a large quantity, and a SCAD is a large number. A TROOP is a small military unit. All of these words can be used to describe a great number of something.