Formal:
* The annual gala fundraiser raised millions for cancer research.
* The city hosted a gala celebrating the 50th anniversary of its founding.
* She wore a stunning gown to the gala dinner.
Informal:
* The party was a real gala, with food, music, and dancing all night long.
* We had a gala time at the amusement park.
* Let's celebrate with a gala dinner at our favorite restaurant.
Figurative:
* The opening night of the play was a gala event, with standing ovations and rave reviews.
* The children were in a gala mood, excited for their holiday vacation.
Other uses:
* Gala apples are a popular variety known for their sweetness and crispness.
* The gala season is in full swing, with many charity events and concerts.