my·thol·o·gy 
(mĭ-thŏlə-jē)
(mĭ-thŏlə-jē)n. pl. my·thol·o·gies
1.
a. A body or collection of myths belonging to a people and addressing their origin, history, deities, ancestors, and heroes.
b. A body of myths associated with an event, individual, or institution: "A new mythology, essential to the ... American funeral rite, has grown up" (Jessica Mitford).
2. The field of scholarship dealing with the systematic collection and study of myths.
[French mythologie, from Late Latin mȳthologia, from Greek mūthologiā, story-telling : mūthos, story + logos, saying; see -LOGY.]
my·tholo·gist n.