Creation and origin stories from different cultures may resemble each other or differ significantly. When different creation or origin stories meet and interact, they often adapt and change in response.
Resulting fusions of religious traditions can be called syncretism—as when the early Christian church put Christmas as Christ's birth on the calendar where the pagan Winter Solstice or rebirth of the sun was celebrated, or Easter and the Resurrection in springtime, when fertility symbols like eggs and bunnies are popular but nowhere in the Bible.
The terms "Origin Stories" and "Creation Stories" are often used interchangeably, but possible distinctions:
"Creation Stories" may account for the making of all nature at once or in a limited time, as in Genesis.
"Origin Stories" may tell how a particular being, object, or phenomenon comes into being: e.g., the rainbow, a waterfall, the ocean, the spider, a person or god, a continent, mountain, island. [See for example The Jicarilla (Apache) Genesis, para. 5 & 9]
Pop-Culture Origin Stories
Cultural or National Creation / Origin Stories describe how a particular people came into being:
"Virgin of Guadalupe" story as creation story for Mexico (plus or minus Mexican Americans)
Declaration of Independence by Founding Fathers as USA Creation Story (alternates: the First Thanksgiving or the Pilgrims' journey to America)
Aesthetics & Values of Creation / Origin Stories
Such stories appear inherently entertaining—"first there was nothing, then there was something" evokes a response akin to the pleasure in a magic act—but their real significance:
Creation and Origin Stories reflect, embody, or project the social values and structures of the people who remember and re-tell them.
References to origin stories are references to an original authority. Therefore such references demonstrate a unique power.
Evangelicals (appealing to the original authority of revealed Scripture) use the nuclear family of Genesis to argue for nuclear family values and against marriage equality: "It was Adam and Eve, not Adam and Steve."
Leftists or secularists (appealing to analytical science and empirical nature) accept evolution as a set of facts describing nature, whose species and environments change over time. Thus family structures or sexual behaviors may adapt to these changes: "The world's changing, and we have to change with it."
Andrew O. Wiget, "Native American Oral Narrative" in The Heath Anthology of American Literature 3rd edn., v. 1. Boston: Houghton Mifflin, 1998. 24-27.
Origin and Emergence stories are complex symbolic tales that typically dramatize the tribal explanation of the origin of the earth and its people; establish the central relationships among people, the cosmos or universe, and the other creatures (flora and fauna) of the earth; distinguish gender roles and social organization for the tribe . . . .
Several different types of origin tales are prominent in the Native American canon. The two most common are the Emergence story, found throughout the Southwestern United States, and the Earth-Diver story, which predominates throughout Canada and the eastern region. The Earth-Diver story tells of a great flood that covered the earth and of beings who are borne upon the water until, after several failed attempts, an animal brings up enough mud from beneath the water to begin the magical creation of the earth. . . .
The Biblical stories of Genesis, which most Europeans believed, functioned in a similar manner for the [American] colonists. Yet a comparison of Native American origin tales and Biblical stories illuminates profound cultural differences. Generally speaking, Native Americans traditionally did not believe in a single supreme, autonomous, and eternal being who established the conditions under which all beings must exist. Nor did they consider humans as having a radically different nature from the rest of earth's inhabitants, which they conceived of as intelligent, self-willed, and communicative. . . .
Perhaps most importantly, no Native American origin myth identifies anything at all analogous to the Christian belief in a sin or a fall from the grace of a god. That is, there is no evil pre-condition, no lost harmony and balance, in the Native American interpretation of origin.