Culture, religion, or maybe intimidation on the battle field would be my guesses. Or beliefs, but that would go with culture.
Tires for trucks and planes soles for shoes gas masks and oxygen masks
Masks worn by samurai warriors were simply to look scary as far as i know. A combination of the mask and the headdress with horns and stuff would have been a most intimidating sight if it was running straight at you! But other masks may have been used in plays (mainly noh theatre) and other drama. I don't know too much about Japanese masks but i know that in Indonesia masks with small eyes and sharp noses are heroes and good guys, where as masks with big eyes and round noses are evil villains. It is different in Japan; the larger the eyes, the more trustworthy the character. In traditional Kabuki theatre all actors were men, and the actors didn't speak, this was done by a chorus of musicians. The masks portrated the characters being played and clearly showed the audience whether the player was male or female, young or old, hero or villain (or demon).
bushido or the warrior cod is the code of the samurai
Samurai were from Japan, and the samurai sword is from Japan.
Samurai believed their swords were there souls. Samurai named their swords.
Japanese Samurai masks served as a type of facial armor. There were four types of Samurai masks, the Menpo, Hanbo, Happuri, and the Somen.
For parties
Silicone masks are often used for creation of Halloween or scary masks or for masks of popular film, TV or cartoon characters. Most silicone masks are not 100% silicone, instead being at least part latex.
chhau dance or masquerade
no one yet.
Tires for trucks and planes soles for shoes gas masks and oxygen masks
MS13 - Mara Salvatrucha
aboriginal people like coast salish or squamish. first nations make tons of masks. the masks can resemble wolves,bears,eagles,raven,and any other aboriginal animal.
The site below has a fairly good explaination of the uses of subnet masks.
Samurai Sentai Shinkenger is a Japanese live action series, also known as a Super Sentai season. Shinkenger is the Super Sentai season in which Power Rangers Samurai and Power Rangers Super Samurai uses in order to adapt from it into Samurai and Super Samurai. The majority of Shinkenger footage is used for Samurai and Super Samurai scenes except for scenes within the Shiba House as well as scenes within the zord cockpits.
Daft Punk wear masks because they do not want to be recognized in public. They want to keep their private life separate from their public life.
There are twenty-four different masks, because Link uses the Mask's to do different types of things throughout the game, also the four Boss Masks are the Mask of the Spirit that was set free.