Illiteracy n. : The state of being illiterate, or uneducated; want of learning, or knowledge; ignorance; specifically, inability to read and write; as, the illiteracy shown by the last census.

Illiteracy n. : An instance of ignorance; a literary blunder.

Example:
What are the different levels of Illiteracy?

Taxonomy
literacy, society, literate, literacy rates, languages, United States, schools, instruction, definition of literacy, History, Reading, free encyclopedia, country, women, household, illiterates, provision, 18th century.

Defination from the web:
Illiteracy) Jump to: navigation, search. This article's introduction section may not adequately summarize its contents. ... Illiteracy rate in France in the 18th and 19th centuries ...