Clarification on Auction Gift Card


Above are the description of a Amazon Gift Card and a Under Armour Gift Card
While I understand that Amazon is a platform to purchase online items ranging from books to toys to almost anything, Under Armour is more like a brand of goods ranging from sports equipment to casual apparel only.
But the description of the Under Armour Gift Card is exactly like that of the Amazon Gift Card.

My Question : Is the Under Armour Gift Card also entitled to other Amazon purchases including toys and books and almost anything and not just Under Armour products ?