Here is some important points between them:

1. Different Occasions:

Prom
A prom is a formal dance, or gathering of high school student. It is usually held at the end of junior or senior year. It is a time to make a conclusion of the high school period.

Homecoming
It is an exciting time for a school or university to welcomes back former students. Homecoming party usually happens in the fall.

2. Dress Styles:

Prom
Proms are formal occasions, thus the dressing should also be consistent with formality. If you are seriously to buy prom dresses, you need to start early because it is really time-tested business.

You can search fashion magazines, local stores, and websites to make sure what is popular nowadays. And consider your budget, because though there are both cheap and expensive prom dresses.

Homecoming
The scope of the homecoming dresses is broader than the prom. Usually there is four degree: formal, semi formal, dressy casual and casual and which type is required by the party. Follow the requirements and buy the dresses accordingly.

For the formal one, girls should wear formal dresses, for example evening gowns.
For the semi formal, usually girls wear cocktail dresses or tea length dresses.
For the dressy casual, though it is relatively free to choose what to wear, dresses are better choices. It is ok to wear a skirt.
For the casual one, girls are typically wear street clothes like Jeans and T-shirts.

However, though there are requirements and style limits, the most important thing to keep in mind in homecoming parties is to stay comfortable. If you want and select short prom dresses, then wear a short one which is below or above the knee; if you’d like to wear a long gown, and then do it. Homecoming should be fun.
Different occasion, people wear different dresses, just like prom dresses for proms, homecoming dresses for homecoming parties, etc. Dresses are sweet burdens of girls, because the selection is difficult but the passion is true. With these compassion in mind, it can help you a lot in choosing your own right dresses.

Before you begin searching for your prom or homecoming dress, you should have a clear idea in your mind of whether you’re looking for a full formal, semi-formal or dressy casual style. Most high school proms are full formal, so it’s the perfect opportunity to wear that full length ball gown you’ve always dreamed of, or the kind of sophisticated formal dress you would reserve for the most glamorous occasions.

A homecoming dance or event will usually be less formal, but the dress code will depend on the event and on your particular school’s tradition. The best way to get an idea of the kind of outfit which will be most appropriate is to just ask the senior students, or graduates if you know any.

Now is the time of year when the major trends are beginning to emerge for the coming season. There are a number of looks which are shaping up to be the big trends for 2006, so you have plenty of choice.

Prom and Homecoming Fashion Trends for 2006

Black is the new black. Of course, classic black never really goes out of style, but the sophisticated black dress will be one of the strongest trends for the 2006 prom season. Slinky shapes with glamorous floor length skirts are the main focus.

Bold, dramatic black and white will also be an important look, in particular the classic black and white paneled bodice with a solid white A-line skirt. We’ll also see solid black dresses with dramatic white detailing.

Winter white is still an important look, particularly with silvery beads and details.

Colors for 2006 will be bold and dramatic. Soft pastels have most definitely made way for striking rich reds, dazzling blues, sparkling golds, sunset yellows and even tangy citrus orange tones. If you like to be really daring with color, this will be the year for bold contrasts of two or more strong colors.

The sexy Grecian style gown is tipped to be a particularly hot look for the 2006 season, after Kelly Clarkson really turned heads with the stunning gold silk dress she wore at the VMA Awards in August. If you have a sensational figure, now is the time to really show it off!

Strapless ball gowns were the main attraction at the Golden Globe Awards in 2005, worn by everyone from Kim Kattrall of ‘Sex and the City’ to ‘Friends’ favorite Lisa Kudrow, so we’ll be seeing a lot of this fabulous celebrity style in the upcoming prom season.