loud adj ---not quiet or soft, easily heard voices, cries, laughs
eg:-The bomb exploded with a loud sound that sound loud.
loud, adv---after talk, speak, laugh, sound;
eg:-Don't sound so loud, but they sounded loud and long.
loudly:--adv. in a loud manner:-
eg:-The pop-singer sounded loudly at the concert. What a loudly sound she cried.