Brighten
Part of speech: verb
Definition: To make bright or brighter; to increase the luster of; to give a brighter hue to. To make illustrious, or more distinguished; to add luster or splendor to. To make more cheerful and pleasant; to improve or relieve by dispelling gloom or removing that which obscures and darkens; to shed light upon. To make acute or witty; to enliven. To grow bright, or more bright; to become less dark or gloomy; to clear up; to become bright or cheerful.
Example sentence: Having a good brow can totally brighten your face and give you more of an expressive, youthful look!
Lighten
Part of speech: verb
Definition: To become light or lighter in weight.To become less serious or more cheerful.To make light or lighter in weight.To make less serious or more cheerful.To alleviate; to reduce the burden of.To become brighter or clearer; to brighten.To make brighter or clearer; to illuminate.
Example sentence: When times get tough, at some point, people instinctively know they need to lighten up in order to get through it.