Brightly
Part of speech: adverb
Definition: In a bright manner.
Example sentence: My table is now brightly, now dimly lighted. Its temperature varies. It may receive an ink stain. One of its legs may be broken. It may be repaired, polished, and replaced part by part. But, for me, it remains the table at which I daily write.
Brilliantly
Part of speech: adverb
Definition: in a brilliant manner