Top 10 things to know about the Day of the Dead.

HERE’S ONE THING we know: Día de los Muertos, or Day of the Dead, is not a Mexican version of Halloween.

Though related, the two annual events differ greatly in traditions and tone. Whereas Halloween is a dark night of terror and mischief, Day of the Dead festivities unfolds over two days in an explosion of color and life-affirming joy. Sure, the theme is death, but the point is to demonstrate love and respect for deceased family members. In towns and cities throughout Mexico, revelers don funky makeup and costumes, hold parades and parties, sing and dance, and make offerings to lost loved ones.

Day of the Dead originated several thousand years ago with the Aztec, Toltec, and other Nahua people, who considered mourning the dead disrespectful. For these pre-Hispanic cultures, death was a natural phase in life’s long continuum. The dead were still members of the community, kept alive in memory and spirit—and during Día de los Muertos, they temporarily returned to Earth. Today’s Día de los Muertos celebration is a mash-up of pre-Hispanic religious rites and Christian feasts. It takes place on November 1 and 2—All Saints’ Day and All Souls’ Day on the Catholic calendar—around the time of the fall maize harvest.

The centerpiece of the celebration is an altar, or ofrenda, built in private homes and cemeteries. These aren’t altars for worshipping; rather, they’re meant to welcome spirits back to the realm of the living. As such, they’re loaded with offerings—water to quench thirst after the long journey, food, family photos, and a candle for each dead relative. If one of the spirits is a child, you might find small toys on the altar. Marigolds are the main flowers used to decorate the altar. Scattered from altar to gravesite, marigold petals guide wandering souls back to their place of rest. The smoke from copal incense, made from tree resin, transmits praise and prayers and purifies the area around the altar.

Calavera means “skull.” But during the late 18th and early 19th centuries, calavera was used to describe short, humorous poems, which were often sarcastic tombstone epitaphs published in newspapers that poked fun at the living. These literary calaveras eventually became a popular part of Día de los Muertos celebrations. Today the practice is alive and well. You’ll find these clever, biting poems in print, read aloud, and broadcast on television and radio programs.

In the early 20th century, Mexican political cartoonist and lithographer José Guadalupe Posada created an etching to accompany a literary calavera. Posada dressed his personification of death in fancy French garb and called it Calavera Garbancera, intending it as social commentary on Mexican society’s emulation of European sophistication. “Todos somos calaveras,” a quote commonly attributed to Posada, means “we are all skeletons.” Underneath all our manmade trappings, we are all the same.

In 1947 artist Diego Rivera featured Posada’s stylized skeleton in his masterpiece mural “Dream of a Sunday Afternoon in Alameda Park.” Posada’s skeletal bust was dressed in a large feminine hat, and Rivera made his female and named her Catrina, slang for “the rich.” Today, the calavera Catrina, or elegant skull, is the Day of the Dead’s most ubiquitous symbol.

You work up a mighty hunger and thirst traveling from the spirit world back to the realm of the living. At least that’s the traditional belief in Mexico. Some families place their dead loved one’s favorite meal on the altar. Other common offerings:

Pan de muerto, or bread of the dead, is a typical sweet bread (pan dulce), often featuring anise seeds and decorated with bones and skulls made from dough. The bones might be arranged in a circle, as in the circle of life. Tiny dough teardrops symbolize sorrow.

Drinks, including pulque, a sweet fermented beverage made from the agave sap; atole, a thin warm porridge made from corn flour, with unrefined cane sugar, cinnamon, and vanilla added; and hot chocolate.