Revaz will battle for playing time with Chol Marial and Galin Smith.
Cornish is a four-star guard from Maryland, attending high school in South Carolina.
Trimble had spent the previous season with Cairns Taipans in the Australian NBL.
The former Terrapin sharpshooter enjoyed a successful second NBA season.
The former all-Big Ten standout provided quality depth minutes for the Hawks.
The All-American had a memorable two seasons for the Terps.
Charles will go down as one of the all-time greats for Maryland women's basketball.
The forward's decision leaves the Terps' frontcourt depth thin.
A projection from Joe Lunardi has the Terps near the bubble.