There is no adjective in that sentence.
She twirled around the room happily, enjoying the music and the company of her friends.
Happy is an adjective. (I'd be happy to show you around) It also may form an adverb, (happily) or a noun, happiness.
The frisky little puppy ran happily around the yard.
Round is an adjective in that sentence.
A playful litter of wiggled puppies around the kitchen floor.
The subject of this sentence is litter. In this sentence puppies is the object of a preposition.
The stream wandered slowly around the meadow. Happily, I only wandered around the mall for about 40 minutes until I found you.
The two children did happily gyrate around the dragon that ate the deadly pirate. Gyrate means to whirl.
The adjective is colorful. The nouns are mom, lanterns, yard.
Please do not mess around with the equipment in the lab.
The cat chased its tail around the room.
Graceful. You can use it in a sentence like: The graceful ballerina danced around the room like a swan gliding across the lake.