The Debut

[jake]

Hmm ... well, Steve, I've tried to provide proper definitions of BOTH - based on my interpretation of each - #12, 14 & 16, respectively, along with [hopefully] appropriate self-explanatory examples.

Depends on who you ask Arthur

The Debut is a traditional Filipino coming-of-age celebration for young women in which it celebrates a young woman's 18th birthday, the age of maturity in the Philippines.

Although also reaching maturity at 18, Filipino men mark their own Debut on their 21st birthday, albeit with less formal celebrations or none at all.
On their 18th birthday, Filipinos customarily throw a large party, complete with her own hand-picked entourage of 18 individuals or multiple sets of 18. The celebrant's court usually wears a formal uniform.

http://en.wikipedia.org/wiki/Philippine_Debut

[Arthur Little]

Depends on who you ask Arthur

The Debut is a traditional Filipino coming-of-age celebration for young women in which it celebrates a young woman's 18th birthday, the age of maturity in the Philippines.

Although also reaching maturity at 18, Filipino men mark their own Debut on their 21st birthday, albeit with less formal celebrations or none at all.
On their 18th birthday, Filipinos customarily throw a large party, complete with her own hand-picked entourage of 18 individuals or multiple sets of 18. The celebrant's court usually wears a formal uniform.

http://en.wikipedia.org/wiki/Philippine_Debut

Ah ... so it's an old Filipino custom/tradition in its own right - aside from the English derivation we're familiar with - then, Jake?